Revert "Fix working with mssql" (#677)

This reverts commit 9c2a75c

src/ProductBundle/DependencyInjection/SonataProductExtension.php

@@ -312,14 +312,14 @@ public function registerDoctrineMapping(array $config): void
             'targetEntity' => $config['class']['product'],
             'cascade' => [
                 'persist',
-                'remove',
             ],
             'mappedBy' => null,
             'inversedBy' => 'variations',
             'joinColumns' => [
                 [
                     'name' => 'parent_id',
                     'referencedColumnName' => 'id',
+                    'onDelete' => 'CASCADE',
                 ],
             ],
             'orphanRemoval' => false,