public function removepopup($id){
    $collection = $this->connect()->deleteOne(['_id' => new MongoDBBSONObjectID( $id )]);
}

public function removepopup($id){
    $collection = $this->connect()->deleteOne(['_id' => new MongoDBBSONObjectID( $id )]);
     if($collection->getDeletedCount() == 0){
          //No se ha eliminado ninguna fila
          return false;
     }
     return true;
}