Revert "Updated tex/latex/isuth-modules"

This reverts commit d3791e8fcd1b8b194e3dd34a33f1ae1ee3492454.

Conflicts:
	tex/latex/isuth-modules/gp-macros.dcf

  * gp-macros.dcf: command '\norm' is already defined in
    'gp-mmacros.dcf' (this was my first run of git revert, I did
    something wrong).