Don't reference the major version for the push gateway specification

If we ever have a v2 endpoint for the push gateway, we'd likely spec it alongside the v1 stuff, updating applicable references elsewhere.

api/push-gateway/push_notifier.yaml

@@ -20,7 +20,7 @@ host: localhost:8008
 schemes:
   - https
   - http
-basePath: /_matrix/push/%PUSH_GATEWAY_MAJOR_VERSION%
+basePath: /_matrix/push/v1
 consumes:
   - application/json
 produces:

scripts/gendoc.py

@@ -546,7 +546,6 @@ if __name__ == '__main__':
         "%CLIENT_MAJOR_VERSION%": "r0",
         "%SERVER_RELEASE_LABEL%": args.server_release,
         "%SERVER_MAJOR_VERSION%": extract_major(args.server_release),
-        "%PUSH_GATEWAY_MAJOR_VERSION%": "v1",
         "%PUSH_GATEWAY_RELEASE_LABEL%": args.push_gateway_release,
     }