Fix new errors found by vulture 1.6

nxdrive/commandline.py:629: unused method 'console' (60% confidence)
nxdrive/engine/watcher/local_watcher.py:1342: unused method 'on_any_event' (60% confidence)
nxdrive/engine/watcher/local_watcher.py:1365: unused method 'on_any_event' (60% confidence)
nxdrive/gui/api.py:178: unused method 'get_update_status' (60% confidence)
nxdrive/gui/folders_model.py:68: unused method 'is_hidden' (60% confidence)
nxdrive/gui/view.py:56: unused method 'nameRoles' (60% confidence)
nxdrive/gui/view.py:453: unused method 'getTag' (60% confidence)
nxdrive/gui/view.py:457: unused method 'getName' (60% confidence)
nxdrive/options.py:294: unused function '__getattr__' (60% confidence)
nxdrive/options.py:305: unused function '__setattr__' (60% confidence)
nxdrive/options.py:314: unused function '__repr__' (60% confidence)
nxdrive/options.py:322: unused function '__str__' (60% confidence)
nxdrive/osi/__init__.py:52: unused method 'install_addons' (60% confidence)
nxdrive/osi/__init__.py:99: unused method 'cb_get' (60% confidence)
nxdrive/osi/darwin/darwin.py:101: unused method 'cb_get' (60% confidence)
nxdrive/osi/darwin/pyNotificationCenter.py:30: unused method 'userNotificationCenter_didActivateNotification_' (60% confidence)
nxdrive/osi/darwin/pyNotificationCenter.py:44: unused method 'userNotificationCenter_shouldPresentNotification_' (60% confidence)
nxdrive/osi/linux/linux.py:32: unused method 'cb_get' (60% confidence)
nxdrive/osi/windows/windows.py:63: unused method 'cb_get' (60% confidence)
nxdrive/osi/windows/windows.py:87: unused method 'install_addons' (60% confidence)
nxdrive/translator.py:122: unused method 'format_date' (60% confidence)