Texture map for villager types contain unused pixels

The Bug

Almost all of the villager texture map files have pixels that remain unused in the entity. The one villager texture that does not have this texture problem, is the jungle.png villager texture map. Attatched are the listed textures that go unused, and the files of the proposed fixes. Also attatched is an image of the jungle villager for comparison.

Observed Result

The villager types had unused pixels in the texture map

Expected Result

The villager types wouldn't have unused pixels