Remove deprecated comparing AC::Parameters with a hash assertion

https://buildkite.com/rails/rails/builds/85809#83bae90f-f7ca-4a23-aab9-c9b71d5b823f/1167-1177

Author: kamipo

actionpack/test/controller/parameters/parameters_permit_test.rb

@@ -444,7 +444,6 @@ def walk_permitted(params)
     assert_instance_of Hash, params.to_hash
     assert_not_kind_of ActionController::Parameters, params.to_hash
     assert_equal({ "crab" => "Senjougahara Hitagi" }, params.to_hash)
-    assert_equal({ "crab" => "Senjougahara Hitagi" }, params)
   ensure
     ActionController::Parameters.permit_all_parameters = false
   end