prune unneeded transaction parents
prune unneeded transaction parents

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