Remove ConfineMouseTracker field
Remove ConfineMouseTracker field

ppy/osu,smoogipoo/osu,peppy/osu,NeoAdonis/osu,UselessToucan/osu,peppy/osu,smoogipoo/osu,NeoAdonis/osu,UselessToucan/osu,peppy/osu,smoogipooo/osu,UselessToucan/osu,ppy/osu,NeoAdonis/osu,smoogipoo/osu,peppy/osu-new,ppy/osu