Cleaned up pre-commit script

Author: cburkert

gitprivacy/resources/hooks/pre-commit

@@ -1,6 +1,3 @@
 #!/bin/sh
 
-gitdir="$(git rev-parse --git-dir)"
-hook="$gitdir/hooks/post-commit"
-
 git-privacy --gitdir "$(git rev-parse --show-toplevel)" check