remove snapshots from command line doesn't work

[Germar]

Split bug #490

DEBUG: [common/backintime.py:450 arg_parse] Arguments: {'debug': True, 'func': <function remove at 0x7fc571a14d08>, 'command': 'remove'} | unknownArgs: []

Back In Time
Version: 1.1.8

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.

DEBUG: [common/backintime.py:496 getConfig] config file: /home/colinl/.config/backintime
DEBUG: [common/backintime.py:497 getConfig] profiles: ['1']
DEBUG: [common/pluginmanager.py:88 PluginManager.load_plugins] Register plugin path /usr/share/backintime/plugins
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin qt4plugin.py
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin userscriptsplugin.py
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin notifyplugin.py
DEBUG: [common/sshtools.py:192 SSH.unlock_ssh_agent] Add private key /home/colinl/.ssh/id_rsa to ssh agent
DEBUG: [common/sshtools.py:197 SSH.unlock_ssh_agent] Password available: True
DEBUG: [common/mount.py:298 SSH.mountprocess_lock_acquire] Acquire mountprocess lock /home/colinl/.local/share/backintime/mnt/11889.lock
INFO: [common/mount.py:203 SSH.mount] Mountpoint /home/colinl/.local/share/backintime/mnt/A5868FDC/mountpoint is already mounted
DEBUG: [common/mount.py:319 SSH.set_mount_lock] Set mount lock /home/colinl/.local/share/backintime/mnt/A5868FDC/locks/11889.lock
DEBUG: [common/mount.py:307 SSH.mountprocess_lock_release] Release mountprocess lock /home/colinl/.local/share/backintime/mnt/11889.lock
Do you really want to remove this snapshots?
(no/yes): yes
DEBUG: [common/sshtools.py:244 SSH.unlock_ssh_agent] Private key /home/colinl/.ssh/id_rsa is already unlocked in ssh agent
DEBUG: [common/mount.py:298 SSH.mountprocess_lock_acquire] Acquire mountprocess lock /home/colinl/.local/share/backintime/mnt/11889.lock
DEBUG: [common/mount.py:365 SSH.check_locks] Remove old and invalid lock 11873.lock
INFO: [common/mount.py:232 SSH.umount] Mountpoint /home/colinl/.local/share/backintime/mnt/A5868FDC/mountpoint still in use. Keep mounted
DEBUG: [common/mount.py:337 SSH.del_mount_lock] Remove mount lock /home/colinl/.local/share/backintime/mnt/A5868FDC/locks/11889.lock
DEBUG: [common/mount.py:307 SSH.mountprocess_lock_release] Release mountprocess lock /home/colinl/.local/share/backintime/mnt/11889.lock

If I select a particular one to delete I see

user@tigger:~$ backintime --debug remove 20151110-142002-940
DEBUG: [common/backintime.py:450 arg_parse] Arguments: {'command': 'remove', 'func': <function remove at 0x7fdb00349d08>, 'debug': True} | unknownArgs: []

Back In Time
Version: 1.1.8

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.

DEBUG: [common/backintime.py:496 getConfig] config file: /home/user/.config/backintime
DEBUG: [common/backintime.py:497 getConfig] profiles: ['1']
DEBUG: [common/pluginmanager.py:88 PluginManager.load_plugins] Register plugin path /usr/share/backintime/plugins
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin qt4plugin.py
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin userscriptsplugin.py
DEBUG: [common/pluginmanager.py:104 PluginManager.load_plugins] Add plugin notifyplugin.py
DEBUG: [common/sshtools.py:192 SSH.unlock_ssh_agent] Add private key /home/user/.ssh/id_rsa to ssh agent
DEBUG: [common/sshtools.py:197 SSH.unlock_ssh_agent] Password available: True
DEBUG: [common/mount.py:298 SSH.mountprocess_lock_acquire] Acquire mountprocess lock /home/user/.local/share/backintime/mnt/12005.lock
INFO: [common/mount.py:203 SSH.mount] Mountpoint /home/user/.local/share/backintime/mnt/A5868FDC/mountpoint is already mounted
DEBUG: [common/mount.py:319 SSH.set_mount_lock] Set mount lock /home/user/.local/share/backintime/mnt/A5868FDC/locks/12005.lock
DEBUG: [common/mount.py:307 SSH.mountprocess_lock_release] Release mountprocess lock /home/user/.local/share/backintime/mnt/12005.lock
Do you really want to remove this snapshots?
(no/yes): yes
DEBUG: [common/sshtools.py:244 SSH.unlock_ssh_agent] Private key /home/user/.ssh/id_rsa is already unlocked in ssh agent
DEBUG: [common/mount.py:298 SSH.mountprocess_lock_acquire] Acquire mountprocess lock /home/user/.local/share/backintime/mnt/12005.lock
INFO: [common/mount.py:232 SSH.umount] Mountpoint /home/user/.local/share/backintime/mnt/A5868FDC/mountpoint still in use. Keep mounted
DEBUG: [common/mount.py:337 SSH.del_mount_lock] Remove mount lock /home/user/.local/share/backintime/mnt/A5868FDC/locks/12005.lock
DEBUG: [common/mount.py:307 SSH.mountprocess_lock_release] Release mountprocess lock /home/user/.local/share/backintime/mnt/12005.lock