make use of short declaration of variables and cleanup code

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

pkg/common-controller/snapshot_finalizer_test.go

@@ -26,7 +26,6 @@ import (
 // Test single call to ensurePVCFinalizer, checkandRemovePVCFinalizer, addSnapshotFinalizer, removeSnapshotFinalizer
 // expecting finalizers to be added or removed
 func TestSnapshotFinalizer(t *testing.T) {
-
 	tests := []controllerTest{
 		{
 			name:             "1-1 - successful add PVC finalizer",