Adds ineffassign to GO linter script.

Changes:
 - Enables ineffassign check in the verify scripts.
 - Fixes lint errs.

test/integration/apiserver/apiserver_test.go

@@ -1285,11 +1285,6 @@ func TestAPICRDProtobuf(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			rv, _ := strconv.Atoi(obj.GetResourceVersion())
-			if rv < 1 {
-				rv = 1
-			}
-
 			w, err := client.Get().
 				Resource(resource).NamespaceIfScoped(obj.GetNamespace(), len(obj.GetNamespace()) > 0).Name(obj.GetName()).SubResource(tc.subresource).
 				SetHeader("Accept", tc.accept).