Hey @henjolo!
Welcome to the forum 
the Live15 Remote Script is build with the YURS (Yaeltex Universal Remote Script), which has some workarounds to co-exist with a regular mapping.
Check this post to learn more about the YURS YURS: Yaeltex Universal Remote Script for Ableton Live
Instead of disabling components in the script files, what I would recommend as the best way to leave some controls “free to map” is to change their MIDI channel to one of the “free MIDI channels” of the YURS (channels 12, 13, 14, 15).
You can do this in Kilowhat. 
BEWARE, in order to start from your current Live15 configuration, make sure to select the “CTRL” option once the pop up window appears. If you select “DEFAULT”, it will load the factory default, which is not compatible with the script.
So what you would do is to change the MIDI channel of the controls you want to remove from the script to one of the free ones.