proximity: Make sure we destroy the fader when we unclaim the sensor
We must never blank screen when not tracking proximity.
Albeit not the root cause this should help https://source.puri.sm/Librem5/linux-next/-/issues/306 and a good thing to do anyway.
Signed-off-by: Guido Günther guido.gunther@puri.sm
Edited by Guido Gunther