Stop duplicate logs into `/var/run/kmesh/daemon.log`

[hzxuzhonghu]

What would you like to be added:

By default all the logs are also redirected to log file /var/run/kmesh/daemon.log

https://github.com/kmesh-net/kmesh/blob/main/pkg/logger/logger.go#L51

In pod mode, this seems not neccessary.

[hzxuzhonghu]

done