libceph: nuke time_sub()

Unused since ceph got merged into mainline I guess.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2015-05-15 11:52:20 +03:00
commit d50c97b566