(mvc) unused, pull part of https://github.com/opnsense/core/pull/1134

src/opnsense/mvc/app/controllers/OPNsense/Base/ApiMutableModelControllerBase.php

@@ -106,22 +106,6 @@ abstract class ApiMutableModelControllerBase extends ApiControllerBase
         return $this->modelHandle;
     }
 
-    /**
-     * validate and save model after update or insertion.
-     * Use the reference node and tag to rename validation output for a specific node to a new offset, which makes
-     * it easier to reference specific uuids without having to use them in the frontend descriptions.
-     * @param $node reference node, to use as relative offset
-     * @return array result / validation output
-     */
-    protected function validateAndSave($node = null)
-    {
-        $result = $this->validate();
-        if (empty($result['result'])) {
-            return $this->save();
-        }
-        return $result;
-    }
-
     /**
      * validate this model
      * @param $node reference node, to use as relative offset