tmpfs: deny and force are not huge mount options

5.6-rc1 commit 2710c957 ("fs_parse: get rid of ->enums") regressed
the huge tmpfs mount options to an earlier state: "deny" and "force"
are not valid there, and can crash the kernel.  Delete those lines.
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

mm/shmem.c

@@ -3386,8 +3386,6 @@ static const struct constant_table shmem_param_enums_huge[] = {
 	{"always",	SHMEM_HUGE_ALWAYS },
 	{"within_size",	SHMEM_HUGE_WITHIN_SIZE },
 	{"advise",	SHMEM_HUGE_ADVISE },
-	{"deny",	SHMEM_HUGE_DENY },
-	{"force",	SHMEM_HUGE_FORCE },
 	{}
 };