diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index a5d8d953ec546..83ab0180bf876 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Remove deprecated `RAILS_CACHE` constant.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated `serve_static_assets` configuration.
 
     *Rafael Mendonça França*
diff --git a/railties/lib/rails/deprecation.rb b/railties/lib/rails/deprecation.rb
deleted file mode 100644
index 89f54069e9e3a..0000000000000
--- a/railties/lib/rails/deprecation.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-require 'active_support/deprecation/proxy_wrappers'
-
-module Rails
-  class DeprecatedConstant < ActiveSupport::Deprecation::DeprecatedConstantProxy
-    def self.deprecate(old, current)
-      # double assignment is used to avoid "assigned but unused variable" warning
-      constant = constant = new(old, current)
-      eval "::#{old} = constant"
-    end
-
-    private
-
-    def target
-      ::Kernel.eval @new_const.to_s
-    end
-  end
-
-  DeprecatedConstant.deprecate('RAILS_CACHE', '::Rails.cache')
-end