Revert "netfilter: nft_ct: fix use after free when attaching zone template"

This reverts commit 2e25c46c.

It breaks the abi and is not really needed for Android systems, so
revert it for now.

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I20e6d9e81124122c75289424b8411d85c9047c71