net/smc: remove unused function smc_lo_supports_v2

JIRA: https://issues.redhat.com/browse/RHEL-99989

commit 091d019
Author: Wang Liang <wangliang74@huawei.com>
Date:   Thu Jun 19 11:08:54 2025 +0800

    net/smc: remove unused function smc_lo_supports_v2

    The smcd_ops->supports_v2 is only called in smcd_register_dev(), which
    calls function smcd_supports_v2 for ism. For loopback-ism, function
    smc_lo_supports_v2 is unused, remove it.

    Signed-off-by: Wang Liang <wangliang74@huawei.com>
    Reviewed-by: Simon Horman <horms@kernel.org>
    Link: https://patch.msgid.link/20250619030854.1536676-1-wangliang74@huawei.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Signed-off-by: Mete Durlu <mdurlu@redhat.com>

Author: Mete Durlu

net/smc/smc_loopback.c

@@ -251,11 +251,6 @@ static int smc_lo_move_data(struct smcd_dev *smcd, u64 dmb_tok,
 	return 0;
 }
 
-static int smc_lo_supports_v2(void)
-{
-	return SMC_LO_V2_CAPABLE;
-}
-
 static void smc_lo_get_local_gid(struct smcd_dev *smcd,
 				 struct smcd_gid *smcd_gid)
 {
@@ -288,7 +283,6 @@ static const struct smcd_ops lo_ops = {
 	.reset_vlan_required	= NULL,
 	.signal_event		= NULL,
 	.move_data = smc_lo_move_data,
-	.supports_v2 = smc_lo_supports_v2,
 	.get_local_gid = smc_lo_get_local_gid,
 	.get_chid = smc_lo_get_chid,
 	.get_dev = smc_lo_get_dev,