Merge pull request #11369 from mooror/getRemoveAction-access-modifier…

…-update

API Made the GridFieldDeleteAction method getRemoveAction() protected

src/Forms/GridField/GridFieldDeleteAction.php

@@ -225,7 +225,7 @@ public function handleAction(GridField $gridField, $actionName, $arguments, $dat
      * @param string $columnName
      * @return GridField_FormAction|null
      */
-    private function getRemoveAction($gridField, $record, $columnName)
+    protected function getRemoveAction($gridField, $record, $columnName)
     {
         if ($this->getRemoveRelation()) {
             $this->checkForRequiredMethod($record, 'canEdit');