Hey there Landdon!
Since it's a script by Kronzky, I'm almost positive he's included some way of hiding the markers in his script (much like the UPS), so I'm guessing for this particular script you just need to read the readme and see what it says. In fact, I suggest you do that, just to make sure you don't mess up the script.
Otherwise, the standard way of hiding a marker is by changing it to an "empty" marker:
"MarkerName" setMarkerType "EMPTY"
Alternatively, if the marker has already been "used up", you can simply delete it:
deleteMarker "MarkerName"
Hope that helps!
Wolfrug out.