[GNOME 3.9+ ONLY] Removed "affectsInputRegion"

I've removed "affectedImputRegion", because GNOME 3.9 and newer doesn't support it anymore and, even if it's not tested, I think that it will work with GNOME 3.8 too.

The reason I did this is because the Dash will hang so that it doesn't hide and you cannot interact with it. The Error gets fixed by removing "affectedImputRegion".