Remove deprecated NamedRouteCollection#helpers

Author: rafaelfranca

actionpack/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated `NamedRouteCollection#helpers`.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated support to define routes with `:to` option that doesn't contain `#`.
 
     *Rafael Mendonça França*

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -102,14 +102,6 @@ def route_defined?(name)
           @path_helpers.include?(key) || @url_helpers.include?(key)
         end
 
-        def helpers
-          ActiveSupport::Deprecation.warn(<<-MSG.squish)
-            `named_routes.helpers` is deprecated, please use `route_defined?(route_name)`
-            to see if a named route was defined.
-          MSG
-          @path_helpers + @url_helpers
-        end
-
         def helper_names
           @path_helpers.map(&:to_s) + @url_helpers.map(&:to_s)
         end