Remove unused compile transforms

The __kind_of__ call was only used in one place and can be replaced with
using Rubinius::Type that we now have. The JIT can also optimize these
regular methods well now, so having this doesn't give us anything
anymore.

kernel/bootstrap/nil.rb

@@ -21,8 +21,6 @@ def nil?
     true
   end
 
-  alias_method :__nil__, :nil?
-
   def to_a
     []
   end

kernel/common/kernel.rb

@@ -345,8 +345,6 @@ def instance_of?(cls)
     Rubinius::Type.object_class(self) == cls
   end
 
-  alias_method :__instance_of__, :instance_of?
-
   def instance_variable_get(sym)
     Rubinius.primitive :object_get_ivar
 
@@ -425,8 +423,6 @@ def nil?
     false
   end
 
-  alias_method :__nil__, :nil?
-
   def methods(all=true)
     methods = singleton_methods(all)
 

kernel/delta/kernel.rb

@@ -65,7 +65,7 @@ def method_missing(meth, *args)
 
     object_class = Rubinius::Type.object_class(self)
 
-    if __kind_of__(Module)
+    if Rubinius::Type.object_kind_of?(self, Module)
       msg << " on #{self} (#{object_class})"
 
     # A separate case for nil, because people like to patch methods to

lib/compiler/ast/transforms.rb

@@ -328,40 +328,6 @@ def bytecode(g)
       end
     end
 
-    ##
-    # Maps various methods to VM instructions
-    #
-    class SendInstructionMethod < SendWithArguments
-      transform :default, :fast_system, "VM instructions for certain methods"
-
-      Methods = {
-        :__kind_of__     => :kind_of,
-        :__instance_of__ => :instance_of,
-        :__nil__         => :is_nil,
-      }
-
-      Arguments = {
-        :__kind_of__     => 1,
-        :__instance_of__ => 1,
-        :__nil__         => 0,
-      }
-
-      def self.match?(line, receiver, name, arguments, privately)
-        return false unless rename = Methods[name]
-        if match_arguments? arguments, Arguments[name]
-          new line, receiver, rename, arguments, privately
-        end
-      end
-
-      def bytecode(g)
-        pos(g)
-        @arguments.bytecode(g)
-        @receiver.bytecode(g)
-
-        g.__send__ @name
-      end
-    end
-
     ##
     # Speeds up certain forms of Type.coerce_to
     #