Remove database app_name and app_uuid (#7562)

- Remove database app_name, app_uuid
  - This is handled automatically by the database class
- Remove redundant database::new()

core/groups/app_defaults.php

@@ -86,8 +86,6 @@ if ($domains_processed == 1) {
 				}
 				$x++;
 			}
-			$database->app_name = 'groups';
-			$database->app_uuid = '2caf27b0-540a-43d5-bb9b-c9871a1e4f84';
 			$database->save($array, false);
 			unset($array);
 		}