Setting that to 0 disables vibration, 2 doesn’t seem to differ from 1.
Playing around with /sys/class/leds/vibrator/ doesn’t have an effect either, and neither has /usr/lib64/qt5/plugins/feedback/droid-vibrator-device.ini. At least setting the levels in this file to 0 and rebooting didn’t deactivate/decrease vibration.
I’m also interested in a solution for this, but couldn’t find one (yet).