fix(on-slave): temporary fix for linstor import error

Signed-off-by: Damien Thenot <[email protected]>

Author: Nambrok

drivers/on_slave.py

@@ -83,7 +83,6 @@ def _is_open(session, args):
     import EXTSR
     import LargeBlockSR
     import GlusterFSSR
-    import LinstorSR
     import LVMSR
     import MooseFSSR
     import NFSSR