Merge pull request #275 from huffmanca/update_snapshotclass_deletion

Allows VolumeSnapshot to be deleted if the class isn't found

pkg/common-controller/snapshot_controller.go

@@ -1076,7 +1076,7 @@ func (ctrl *csiSnapshotCommonController) getSnapshotClass(className string) (*cr
 	class, err := ctrl.classLister.Get(className)
 	if err != nil {
 		klog.Errorf("failed to retrieve snapshot class %s from the informer: %q", className, err)
-		return nil, fmt.Errorf("failed to retrieve snapshot class %s from the informer: %q", className, err)
+		return nil, err
 	}
 
 	return class, nil