Convert triangle.bf to unix format.

Signed-off-by: Austin Seipp <mad.one@gmail.com>
Eliminate all extraneous trailing whitespace.

Done via:

  $ for i in `git ls-tree HEAD --full-tree --name-only -r`; do emacs -q \
  -batch $i -no-site-file --eval "(delete-trailing-whitespace)" --eval \
  "(save-buffer)"; done

Signed-off-by: Austin Seipp <mad.one@gmail.com>