nixpkgs: Remove obsolete comments.

The first one was for ffmpeg and x11grab support. Maybe I'll need this someday
again if I happen to create a screencast again. But for now, just remove it.

And the second one actually was an attempt to patch git to always sign commits.
I have found a better and more selective solution by just adding the following
alias:

rebase-sign = !EDITOR=cat git rebase -i -x 'git commit --amend --no-edit -S'

This should make it easy to sign all commits prior to pushing easily with:

git rebase-sign upstream/master

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

0 files changed, 0 insertions, 0 deletions