Remove errant frozen_string_literal directive.
Remove errant frozen_string_literal directive.

The directive already appears higher in the file, so it is unnecessary here. Moreover, it is ignored if any tokens have been seen in the file before the directive is encountered.
rmosolgo/graphql-ruby,nevesenin/graphql-ruby,rmosolgo/graphql-ruby,rmosolgo/graphql-ruby,nevesenin/graphql-ruby,rmosolgo/graphql-ruby,nevesenin/graphql-ruby,nevesenin/graphql-ruby