x-scope annotations on server side shouldn't be sent to the client

[analogue]

See internal ticket GSI-252 for the details.

Basically, x-scope annotations that reference file:// type urls are being sent to the client which then tries to use the file:// type urls to resolve $refs. The x-scope annotation should not be part of the swagger.json sent to the client.

The error surfaces on the client side in an exception that closely resembles:

RefResolutionError: <urlopen error [Errno 2] No such file or directory: '/code/api_docs/swagger.json'>

[analogue]

Fixed in 4.2.0