No need to specify the resolve type for GraphQL::Schema

This was needed back in the 0.18.11 version but not anymore after the
update to 1.3.0

spec/lib/graphql_spec.rb

@@ -10,11 +10,6 @@ QueryType = query_type_creator.create
 ConsulSchema = GraphQL::Schema.define do
   query QueryType
   max_depth 12
-
-  resolve_type -> (object, ctx) do
-    type_name = object.class.name # look up types by class name
-    ConsulSchema.types[type_name]
-  end
 end
 # ------------------------------------------------------------------------------