public function remove($id, $instanceName)
    {
        $this->getConnection()->table($this->getTableName())
            ->where('id', $id)
            ->where('instance', $instanceName)
            ->delete();
    }
public function remove($id, $instanceName)
    {
        $this->getConnection()->table($this->getTableName())
            ->where('id', $id)
            ->where('instance', $instanceName)
            ->delete();
    }
public function remove ( $ id , $ instanceName ) { $ this -> getConnection ( ) -> table ( $ this -> getTableName ( ) ) -> where ( 'id' , $ id ) -> where ( 'instance' , $ instanceName ) -> delete ( ) ; }
Remove shopping cart by its identifier and instance name.

@param string $id
@param string $instanceName
Remove shopping cart by its identifier and instance name .