ubi_flush() was added in 2012 as part of
commit 62f384552b ("UBI: modify ubi_wl_flush function to clear work queue
for a lnum")
but has remained unused.
(It's friend ubi_wl_flush() is still used)
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
ca7be9c0a1