fsck.f2fs: reduce redundant message
fsck.f2fs: reduce redundant message

This assert message is unnecessary to be shown, since caller shows the reason
already.

Change-Id: Ie258ddf3bb3abce79842712af153d1f00dd50e5e
Signed-off-by: Jaegeuk Kim <71255387a32c360dfbe6dfb7aaeb123bf1dc8cb6@kernel.org>

Yu-AndroidM/android_external_f2fs-tools,Yu-AndroidM/android_external_f2fs-tools