Remove redundant logging statements

- Removed log statement in `pkg/app/relay/spider-fetch.go` for batch processing
- Removed log level output in `main.go`
- Removed configuration logging in `pkg/app/config/config.go`
- Removed unused log import in `pkg/protocol/ws/subscription.go`
- Removed connection success log in `pkg/protocol/ws/client.go`
- Added early return condition for non-follow-list kind in `spider-fetch.go`

pkg/protocol/ws/client.go

@@ -103,7 +103,6 @@ func RelayConnect(ctx context.T, url string, opts ...RelayOption) (
 ) {
 	r := NewRelay(context.Bg(), url, opts...)
 	err := r.Connect(ctx)
-	log.T.F("connected to %s", url)
 	return r, err
 }