fix multipack circular dependency

Author: smkhalsa

ferry_test_graphql/pubspec.yaml

@@ -2,16 +2,15 @@ name: ferry_test_graphql
 version: 0.0.2
 description: Example GraphQL Operations, used in Ferry tests
 repository: https://github.com/gql-dart/ferry
-environment:
+environment: 
   sdk: '>=2.7.0 <3.0.0'
-dependencies:
+dependencies: 
   built_collection: ^4.3.2
   built_value: ^7.1.0
   gql: ^0.12.4
   gql_exec: ^0.2.4
   gql_code_builder: ^0.1.4+1
-  ferry_exec: ^0.0.2
-dev_dependencies:
+dev_dependencies: 
   build_runner: ^1.10.1
   gql_build: ^0.1.4+2
   pedantic: ^1.9.0