PTREE_REMOVE_CONV : conv
- patriciaLib.PTREE_REMOVE_CONV ``Empty \\ 3``;
> val it = |- <{}> \\ 3 = <{}>: thm
- patriciaLib.PTREE_REMOVE_CONV ``Branch 0 0 (Leaf 3 2) (Leaf 2 1) \\ 3``;
> val it = |- Branch 0 0 (Leaf 3 2) (Leaf 2 1) \\ 3 = Leaf 2 1: thm