title: Remove of markers in prunecluster
body: <p>I load markers on the map. How to properly filter them? I tried to remove all markers via the RemoveMarkers () function, but they still just do not render. The idea is to remove all markers and request new markers to place them on the map. However, I can not remove the old markers. I tried to delete the entire .remove() layer, but this does not help</p>