Merge pull request #4769 from rmosolgo/remove-deprecation-mod

remove GraphQL::Deprecation helper

Author: rmosolgo

lib/graphql.rb

@@ -120,5 +120,4 @@ module EmptyObjects
 require "graphql/unauthorized_error"
 require "graphql/unauthorized_field_error"
 require "graphql/load_application_object_failed_error"
-require "graphql/deprecation"
 require "graphql/testing"

lib/graphql/deprecation.rb

@@ -100,9 +100,7 @@ def self.thingsCount(args, ctx) # rubocop:disable Naming/MethodName
         }
       |}
       let(:result) {
-        GraphQL::Deprecation.stub(:warn, nil) do
-          schema.execute(query_string, variables: provided_variables, root_value: ObjectWithThingsCount)
-        end
+        schema.execute(query_string, variables: provided_variables, root_value: ObjectWithThingsCount)
       }
 
       describe "when they are present, but null" do