Add -delete_backup argument to remove backup dir

[alichtman]

Look up backup path in config file and remove it.
Also add this to the interactive menu.

[smartfin]

Hi. I'm wondering if you are looking to remove previous existed backup dir before writing new backup to it?
So, user can run shallow-backup -cleanup ~/shallow-backup-dir and just remove old directory without creating new one?

[alichtman]

No, what this flag should do is just remove the directory.

I'm wondering if you are looking to remove previous existed backup dir before writing new backup to it?

This is the way shallow-backup works currently. All I want to do is add a flag that will remove the backup, equivalent to rm -rf BACKUP_DIR_PATH