src/models/Seo.php
public function delete()
    {
        if (!$this->_isNewRecord) {
            $this->_owner->getDb()
                ->createCommand()
                ->delete(
                    self::tableName($this->_owner),
                    ['model_id' => $this->_owner->getPrimaryKey(), 'condition' => $this->condition]
                )->execute();
        }
    }
public function delete()
    {
        if (!$this->_isNewRecord) {
            $this->_owner->getDb()
                ->createCommand()
                ->delete(
                    self::tableName($this->_owner),
                    ['model_id' => $this->_owner->getPrimaryKey(), 'condition' => $this->condition]
                )->execute();
        }
    }
Delete SEO data
@return $this|bool