tr_flora_tree_zifa01-05 has too many doubled vertices

[FredMods]

Zifa tree has doubled vertices on both the trunk and the leaves, when only the leaves need it.

For an example, tr_flora_tree_zifa has 2530 tris, reduced to 1650 without the trunk doubled.

[Kynesifnar]

These have a bunch of other problems too; plenty of bad geometry and UVs.