Remove deleted api grpc.WithBalancerName

[easwars]

We (grpc-go team) noticed that the grpc.WithBalancerName API is being used in your repo. This was deprecated about 4 years ago and was deleted recently in grpc/grpc-go#5232.

We would recommend that you replace grpc.WithBalancerName with the following two dial options:

• Specify the balancer name of your choice using a default service config:
  WithDefaultServiceConfig(fmt.Sprintf({"loadBalancingConfig": [{"%s":{}}]}, balancer.Name))
• Disable the service config specified by your resolver:
  grpc.WithDisableServiceConfig

Thanks

[ukai]

with grpc-go@v1.46.0, compile error with undefined: grpc.WithBalancerName

[easwars]

with grpc-go@v1.46.0, compile error with undefined: grpc.WithBalancerName

Yes, that API has been removed.