yii\db\ActiveRecordInterface::delete PHP Method

    public function delete();

 /**
  * Delete slave record
  *
  * @param ActiveRecordInterface $slave
  */
 protected function deleteSlave(ActiveRecordInterface $slave)
 {
     if ($slave->delete() == false) {
         if (is_callable($this->errorDeleteCallback)) {
             call_user_func($this->errorDeleteCallback, $slave);
         }
     }
 }