Remove async prefix from LoadAsync.
Remove async prefix from LoadAsync.

This is primarily to stop warnings being raised by our standard usage of this call.
We never really want to await these calls anyways.

peppy/osu-framework,default0/osu-framework,peppy/osu-framework,ppy/osu-framework,EVAST9919/osu-framework,ZLima12/osu-framework,smoogipooo/osu-framework,EVAST9919/osu-framework,DrabWeb/osu-framework,Tom94/osu-framework,paparony03/osu-framework,peppy/osu-framework,paparony03/osu-framework,Tom94/osu-framework,Nabile-Rahmani/osu-framework,RedNesto/osu-framework,ppy/osu-framework,ppy/osu-framework,Nabile-Rahmani/osu-framework,EVAST9919/osu-framework,ZLima12/osu-framework,naoey/osu-framework,RedNesto/osu-framework,smoogipooo/osu-framework,DrabWeb/osu-framework,DrabWeb/osu-framework,default0/osu-framework,naoey/osu-framework,EVAST9919/osu-framework