graphics/ptex: replace local patches with committed by upstream

Replace local patches with committed by upstream:
https://github.com/wdas/ptex/commit/8ff5c3e2cf2d2689ca09fc258da2173bfd57cf84

While here sort Makefile, pet portclippy and portlint.

PR: 279473
Approved by: Shane <FreeBSD@ShaneWare.Biz> (maintainer)