UPSTREAM: random: remove unnecessary unlikely()

WARN_ON() already contains an unlikely(), so it's not necessary to use
unlikely.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Link: https://lore.kernel.org/r/20190607182517.28266-1-tiny.windzz@gmail.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
(cherry picked from commit 870e05b1b18814911cb2703a977f447cb974f0f9)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 148665638
Change-Id: I4ea24e729740f234b7a0003a30a48df3c62f0cda