cifs: version operations for smb20 unneeded when legacy support disabled

stable inclusion
from stable-v5.10.122
commit a262e1255b91dd88af483ca8f1b7951917338b88
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5W6OE

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a262e1255b91dd88af483ca8f1b7951917338b88



--------------------------------

[ Upstream commit 7ef93ffc ]

We should not be including unused smb20 specific code when legacy
support is disabled (CONFIG_CIFS_ALLOW_INSECURE_LEGACY turned
off).  For example smb2_operations and smb2_values aren't used
in that case.  Over time we can move more and more SMB1/CIFS and SMB2.0
code into the insecure legacy ifdefs

Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>