removed unused `height` left over from manual merge
removed unused `height` left over from manual merge

mnsl/Sia,rivine/rivine,NebulousLabs/Sia,mharkus/Sia,mnsl/Sia,rivine/rivine,mharkus/Sia,ericflo/Sia,mtlynch/Sia,MrStrong/Sia,ChrisSchinnerl/Sia,MrStrong/Sia,ericflo/Sia,NebulousLabs/Sia,ChrisSchinnerl/Sia,mtlynch/Sia