Remove Storage Manager from cinder-manage

Removing leftover sm_backend manage code that was missed in the previous
code removal in 40cb16784f920387ef.

Fixes: bug #1207189
Change-Id: I52c44785924f489a85e4b5f947ed9b4adf679dd8
Imported Translations from Transifex

Change-Id: I32f1b24bec8c4484799b008a0d24515b094c5072
Merge "Remove Storage Manager from cinder-manage"
Merge "Imported Translations from Transifex"