docs(msvc): remove hint to request-scope msvc client

It's not a good idea, connections are closed on OnApplicationShutdown so
this would leave a lot of lingering connections.

Author: rickdgeerling

content/microservices/mqtt.md

@@ -172,5 +172,3 @@ import { ClientProxyFactory, Transport } from '@nestjs/microservices';
 })
 export class ApiModule {}
 ```
-
-> info **Hint** You could make this provider request-scoped and thus enable things like cross-protocol request tracing.

content/microservices/nats.md

@@ -184,5 +184,3 @@ import { ClientProxyFactory, Transport } from '@nestjs/microservices';
 })
 export class ApiModule {}
 ```
-
-> info **Hint** You could make this provider request-scoped and thus enable things like cross-protocol request tracing.