refactor(phpcs): remove unused imports in Invoice/Factory.php

This commit removes redundant import statements from the `Invoice/Factory.php` file for cleaner,
more efficient code. The removed imports are `QUI\Interfaces\Users\User` which was not used in the
file.

src/QUI/ERP/Accounting/Invoice/Factory.php

@@ -7,11 +7,8 @@
 namespace QUI\ERP\Accounting\Invoice;
 
 use QUI;
-
 use QUI\Database\Exception;
 
-use QUI\Interfaces\Users\User;
-
 use function json_encode;
 
 /**