drbd: remove unused drbd_nl_mcgrps[] array

After the rework, two files have a copy of drbd_nl_mcgrps[], but one
of them has no references:

drivers/block/drbd/drbd_nl_gen.c:641:42: error: 'drbd_nl_mcgrps' defined but not used [-Werror=unused-const-variable=]
  641 | static const struct genl_multicast_group drbd_nl_mcgrps[] = {
      |                                          ^~~~~~~~~~~~~~

At the default warning level, -Wunused-const-variables is turned off,
so this has gone unnoticed.

Remove the extra variable.

Fixes: 8098eeb693c4 ("drbd: replace genl_magic with explicit netlink serialization")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://patch.msgid.link/20260519203057.1340528-1-arnd@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

0 files changed, 0 insertions, 0 deletions