resize method deleted

implementation/storage/OpenstackStorageManager.py

@@ -57,6 +57,3 @@ class OpenstackStorageManager(StorageManager.StorageManager):
             volumes.append(self.os_volume_to_rc_volume(os_volume))
 
         return volumes
-
-    def resize(self, id):
-        pass

interface/storage/StorageManager.py

@@ -16,6 +16,3 @@ class StorageManager:
 
     def list(self):
         raise NotImplementedError
-
-    def resize(self, id):
-        raise NotImplementedError