3 files changed, 0 insertions, 9 deletions
diff --git a/actionpack/lib/action_dispatch/http/parameters.rb b/actionpack/lib/action_dispatch/http/parameters.rb
index 5b22cd1fcd..ff555f93a8 100644
--- a/actionpack/lib/action_dispatch/http/parameters.rb
+++ b/actionpack/lib/action_dispatch/http/parameters.rb
@@ -43,10 +43,6 @@ module ActionDispatch
         @env[Routing::RouteSet::PARAMETERS_KEY] ||= {}
       end
 
-      def reset_parameters #:nodoc:
-        @env.delete("action_dispatch.request.parameters")
-      end
-
     private
 
       # Convert nested Hash to HashWithIndifferentAccess
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 70c3b18e15..84a08770f5 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -51,8 +51,6 @@ module ActionDispatch
           else
             @app.call req.env
           end
-        ensure
-          req.reset_parameters
         end
 
         private
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 51b5e9cf07..a427113763 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -3389,9 +3389,6 @@ class TestAltApp < ActionDispatch::IntegrationTest
     def x_header
       @env["HTTP_X_HEADER"] || ""
     end
-
-    def reset_parameters
-    end
   end
 
   class XHeader