diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index 5d37088d9859..a7785f878629 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -80,10 +80,6 @@ def get_primary_key(base_name) #:nodoc:
           end
         end
 
-        def original_primary_key #:nodoc:
-          deprecated_original_property_getter :primary_key
-        end
-
         # Sets the name of the primary key column.
         #
         #   class Project < ActiveRecord::Base
@@ -103,11 +99,6 @@ def primary_key=(value)
           @primary_key          = value && value.to_s
           @quoted_primary_key   = nil
         end
-
-        def set_primary_key(value = nil, &block) #:nodoc:
-          deprecated_property_setter :primary_key, value, block
-          @quoted_primary_key = nil
-        end
       end
     end
   end
diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb
index ce0a1656601a..7815889b4757 100644
--- a/activerecord/lib/active_record/locking/optimistic.rb
+++ b/activerecord/lib/active_record/locking/optimistic.rb
@@ -144,26 +144,18 @@ def locking_enabled?
           lock_optimistically && columns_hash[locking_column]
         end
 
+        # Set the column to use for optimistic locking. Defaults to +lock_version+.
         def locking_column=(value)
           @original_locking_column = @locking_column if defined?(@locking_column)
           @locking_column          = value.to_s
         end
 
-        # Set the column to use for optimistic locking. Defaults to +lock_version+.
-        def set_locking_column(value = nil, &block)
-          deprecated_property_setter :locking_column, value, block
-        end
-
         # The version column used for optimistic locking. Defaults to +lock_version+.
         def locking_column
           reset_locking_column unless defined?(@locking_column)
           @locking_column
         end
 
-        def original_locking_column #:nodoc:
-          deprecated_original_property_getter :locking_column
-        end
-
         # Quote the column name used for optimistic locking.
         def quoted_locking_column
           connection.quote_column_name(locking_column)
diff --git a/activerecord/lib/active_record/model_schema.rb b/activerecord/lib/active_record/model_schema.rb
index 36417d89f799..1de820b3a6c5 100644
--- a/activerecord/lib/active_record/model_schema.rb
+++ b/activerecord/lib/active_record/model_schema.rb
@@ -105,10 +105,6 @@ def table_name
         @table_name
       end
 
-      def original_table_name #:nodoc:
-        deprecated_original_property_getter :table_name
-      end
-
       # Sets the table name explicitly. Example:
       #
       #   class Project < ActiveRecord::Base
@@ -125,13 +121,6 @@ def table_name=(value)
         @relation            = Relation.new(self, arel_table)
       end
 
-      def set_table_name(value = nil, &block) #:nodoc:
-        deprecated_property_setter :table_name, value, block
-        @quoted_table_name = nil
-        @arel_table        = nil
-        @relation          = Relation.new(self, arel_table)
-      end
-
       # Returns a quoted version of the table name, used to construct SQL statements.
       def quoted_table_name
         @quoted_table_name ||= connection.quote_table_name(table_name)
@@ -161,20 +150,12 @@ def inheritance_column
         end
       end
 
-      def original_inheritance_column #:nodoc:
-        deprecated_original_property_getter :inheritance_column
-      end
-
       # Sets the value of inheritance_column
       def inheritance_column=(value)
         @original_inheritance_column = inheritance_column
         @inheritance_column          = value.to_s
       end
 
-      def set_inheritance_column(value = nil, &block) #:nodoc:
-        deprecated_property_setter :inheritance_column, value, block
-      end
-
       def sequence_name
         if base_class == self
           @sequence_name ||= reset_sequence_name
@@ -183,10 +164,6 @@ def sequence_name
         end
       end
 
-      def original_sequence_name #:nodoc:
-        deprecated_original_property_getter :sequence_name
-      end
-
       def reset_sequence_name #:nodoc:
         self.sequence_name = connection.default_sequence_name(table_name, primary_key)
       end
@@ -210,10 +187,6 @@ def sequence_name=(value)
         @sequence_name          = value.to_s
       end
 
-      def set_sequence_name(value = nil, &block) #:nodoc:
-        deprecated_property_setter :sequence_name, value, block
-      end
-
       # Indicates whether the table associated with this class exists
       def table_exists?
         connection.schema_cache.table_exists?(table_name)
@@ -329,34 +302,6 @@ def compute_table_name
           base.table_name
         end
       end
-
-      def deprecated_property_setter(property, value, block)
-        if block
-          ActiveSupport::Deprecation.warn(
-            "Calling set_#{property} is deprecated. If you need to lazily evaluate " \
-            "the #{property}, define your own `self.#{property}` class method. You can use `super` " \
-            "to get the default #{property} where you would have called `original_#{property}`."
-          )
-
-          define_attr_method property, value, false, &block
-        else
-          ActiveSupport::Deprecation.warn(
-            "Calling set_#{property} is deprecated. Please use `self.#{property} = 'the_name'` instead."
-          )
-
-          define_attr_method property, value, false
-        end
-      end
-
-      def deprecated_original_property_getter(property)
-        ActiveSupport::Deprecation.warn("original_#{property} is deprecated. Define self.#{property} and call super instead.")
-
-        if !instance_variable_defined?("@original_#{property}") && respond_to?("reset_#{property}")
-          send("reset_#{property}")
-        else
-          instance_variable_get("@original_#{property}")
-        end
-      end
     end
   end
 end
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 2e2ab77f6e68..f102634ef1c6 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1383,17 +1383,6 @@ def test_reload_with_exclusive_scope
     assert_equal dev, dev.reload
   end
 
-  def test_set_table_name_with_value
-    k = Class.new( ActiveRecord::Base )
-    k.table_name = "foo"
-    assert_equal "foo", k.table_name
-
-    assert_deprecated do
-      k.set_table_name "bar"
-    end
-    assert_equal "bar", k.table_name
-  end
-
   def test_switching_between_table_name
     assert_difference("GoodJoke.count") do
       Joke.table_name = "cold_jokes"
@@ -1416,17 +1405,6 @@ def test_quoted_table_name_after_set_table_name
     assert_equal klass.connection.quote_table_name("bar"), klass.quoted_table_name
   end
 
-  def test_set_table_name_with_block
-    k = Class.new( ActiveRecord::Base )
-    assert_deprecated do
-      k.set_table_name "foo"
-      k.set_table_name do
-        ActiveSupport::Deprecation.silence { original_table_name } + "ks"
-      end
-    end
-    assert_equal "fooks", k.table_name
-  end
-
   def test_set_table_name_with_inheritance
     k = Class.new( ActiveRecord::Base )
     def k.name; "Foo"; end
@@ -1434,145 +1412,6 @@ def k.table_name; super + "ks"; end
     assert_equal "foosks", k.table_name
   end
 
-  def test_original_table_name
-    k = Class.new(ActiveRecord::Base)
-    def k.name; "Foo"; end
-    k.table_name = "bar"
-
-    assert_deprecated do
-      assert_equal "foos", k.original_table_name
-    end
-
-    k = Class.new(ActiveRecord::Base)
-    k.table_name = "omg"
-    k.table_name = "wtf"
-
-    assert_deprecated do
-      assert_equal "omg", k.original_table_name
-    end
-  end
-
-  def test_set_primary_key_with_value
-    k = Class.new( ActiveRecord::Base )
-    k.primary_key = "foo"
-    assert_equal "foo", k.primary_key
-
-    assert_deprecated do
-      k.set_primary_key "bar"
-    end
-    assert_equal "bar", k.primary_key
-  end
-
-  def test_set_primary_key_with_block
-    k = Class.new( ActiveRecord::Base )
-    k.primary_key = 'id'
-
-    assert_deprecated do
-      k.set_primary_key do
-        "sys_" + ActiveSupport::Deprecation.silence { original_primary_key }
-      end
-    end
-    assert_equal "sys_id", k.primary_key
-  end
-
-  def test_original_primary_key
-    k = Class.new(ActiveRecord::Base)
-    def k.name; "Foo"; end
-    k.table_name = "posts"
-    k.primary_key = "bar"
-
-    assert_deprecated do
-      assert_equal "id", k.original_primary_key
-    end
-
-    k = Class.new(ActiveRecord::Base)
-    k.primary_key = "omg"
-    k.primary_key = "wtf"
-
-    assert_deprecated do
-      assert_equal "omg", k.original_primary_key
-    end
-  end
-
-  def test_set_inheritance_column_with_value
-    k = Class.new( ActiveRecord::Base )
-    k.inheritance_column = "foo"
-    assert_equal "foo", k.inheritance_column
-
-    assert_deprecated do
-      k.set_inheritance_column "bar"
-    end
-    assert_equal "bar", k.inheritance_column
-  end
-
-  def test_set_inheritance_column_with_block
-    k = Class.new( ActiveRecord::Base )
-    assert_deprecated do
-      k.set_inheritance_column do
-        ActiveSupport::Deprecation.silence { original_inheritance_column } + "_id"
-      end
-    end
-    assert_equal "type_id", k.inheritance_column
-  end
-
-  def test_original_inheritance_column
-    k = Class.new(ActiveRecord::Base)
-    def k.name; "Foo"; end
-    k.inheritance_column = "omg"
-
-    assert_deprecated do
-      assert_equal "type", k.original_inheritance_column
-    end
-  end
-
-  def test_set_sequence_name_with_value
-    k = Class.new( ActiveRecord::Base )
-    k.sequence_name = "foo"
-    assert_equal "foo", k.sequence_name
-
-    assert_deprecated do
-      k.set_sequence_name "bar"
-    end
-    assert_equal "bar", k.sequence_name
-  end
-
-  def test_set_sequence_name_with_block
-    k = Class.new( ActiveRecord::Base )
-    k.table_name = "projects"
-    orig_name = k.sequence_name
-    return skip "sequences not supported by db" unless orig_name
-
-    assert_deprecated do
-      k.set_sequence_name do
-        ActiveSupport::Deprecation.silence { original_sequence_name } + "_lol"
-      end
-    end
-    assert_equal orig_name + "_lol", k.sequence_name
-  end
-
-  def test_original_sequence_name
-    k = Class.new(ActiveRecord::Base)
-    k.table_name = "projects"
-    orig_name = k.sequence_name
-    return skip "sequences not supported by db" unless orig_name
-
-    k = Class.new(ActiveRecord::Base)
-    k.table_name = "projects"
-    k.sequence_name = "omg"
-
-    assert_deprecated do
-      assert_equal orig_name, k.original_sequence_name
-    end
-
-    k = Class.new(ActiveRecord::Base)
-    k.table_name = "projects"
-    k.sequence_name = "omg"
-    k.sequence_name = "wtf"
-    assert_deprecated do
-      assert_equal "omg", k.original_sequence_name
-    end
-  end
-
   def test_sequence_name_with_abstract_class
     ak = Class.new(ActiveRecord::Base)
     ak.abstract_class = true
diff --git a/activerecord/test/cases/locking_test.rb b/activerecord/test/cases/locking_test.rb
index 5978b244d48c..f7ee83998dbf 100644
--- a/activerecord/test/cases/locking_test.rb
+++ b/activerecord/test/cases/locking_test.rb
@@ -226,48 +226,6 @@ def test_update_without_attributes_does_not_only_update_lock_version
   end
 end
 
-class SetLockingColumnTest < ActiveRecord::TestCase
-  def test_set_set_locking_column_with_value
-    k = Class.new( ActiveRecord::Base )
-    k.locking_column = "foo"
-    assert_equal "foo", k.locking_column
-
-    assert_deprecated do
-      k.set_locking_column "bar"
-    end
-    assert_equal "bar", k.locking_column
-  end
-
-  def test_set_locking_column_with_block
-    k = Class.new( ActiveRecord::Base )
-    k.locking_column = 'foo'
-
-    assert_deprecated do
-      k.set_locking_column do
-        "lock_" + ActiveSupport::Deprecation.silence { original_locking_column }
-      end
-    end
-    assert_equal "lock_foo", k.locking_column
-  end
-
-  def test_original_locking_column
-    k = Class.new(ActiveRecord::Base)
-    k.locking_column = "bar"
-
-    assert_deprecated do
-      assert_equal ActiveRecord::Locking::Optimistic::ClassMethods::DEFAULT_LOCKING_COLUMN, k.original_locking_column
-    end
-
-    k = Class.new(ActiveRecord::Base)
-    k.locking_column = "omg"
-    k.locking_column = "wtf"
-
-    assert_deprecated do
-      assert_equal "omg", k.original_locking_column
-    end
-  end
-end
-
 class OptimisticLockingWithSchemaChangeTest < ActiveRecord::TestCase
   fixtures :people, :legacy_things, :references