Removed temporary debug hidden cmds _sh and _cfs.
Removed temporary debug hidden cmds _sh and _cfs.

* Were not even proper UI commands (just hardcoded test cases)
* Now useless as that part has been debugged
* Shell access can be dangerous using remote access.

agrover/targetcli-fb,cvubrugier/targetcli-fb,Datera/targetcli,Datera/targetcli,cloud4life/targetcli-fb