netfilter: x_tables: remove size check

Back in 2002 vmalloc used to BUG on too large sizes.  We are much better
behaved these days and vmalloc simply returns NULL for those.  Remove the
check as it simply not needed and the comment is even misleading.

Change-Id: Ibb85e65ee8864a8529fc51cb08092bdf3cecf7e0
Link: http://lkml.kernel.org/r/20180131081916.GO21609@dhcp22.suse.cz


Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Florian Westphal <fw@strlen.de>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Git-commit: fd2c19b2a28bb574b3914466a68ef830212d5cf7
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git


Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Chinmay Agarwal <chinagar@codeaurora.org>