Remove second case of Assert checking bottom 2 gid bits for 0
Remove second case of Assert checking bottom 2 gid bits for 0

This is no longer valid because gids are indexes now.

spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover,spiffcode/hostile-takeover