git-merge-one-file: do not worry about 'rmdir -p' not removing directory.
git-merge-one-file: do not worry about 'rmdir -p' not removing directory.

9ae2172aed289f2706a0e88288909fa47eddd7e7 used "rmdir -p"
carelessly, causing the more important "git-update-index
--remove" to be skipped.

Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git