Migrate resolver spec

Author: rmosolgo

spec/graphql/schema/resolver_spec.rb

@@ -238,7 +238,6 @@ def self.resolve_type(obj, ctx)
 
     class BaseObject < GraphQL::Schema::Object
       class BaseField < GraphQL::Schema::Field
-        # include(GraphQL::Execution::Next::FieldCompatibility) if TESTING_EXEC_NEXT
       end
       field_class(BaseField)
     end