ref(geometry): remove submesh/primgroup split
ref(geometry): remove submesh/primgroup split

stardazed/stardazed,stardazed/stardazed-tx,stardazed/stardazed-tx,zenmumbler/libzm,zenmumbler/libzm,zenmumbler/stardazed-tx,stardazed/stardazed,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm,zenmumbler/libzm