cr-check: make uffd verification "extra" rather then "experimental"

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/cr-check.c

@@ -1188,8 +1188,6 @@ int cr_check(void)
 	if (opts.check_experimental_features) {
 		ret |= check_autofs();
 		ret |= check_compat_cr();
-		ret |= check_uffd();
-		ret |= check_uffd_noncoop();
 	}
 
 	print_on_level(DEFAULT_LOGLEVEL, "%s\n", ret ? CHECK_MAYBE : CHECK_GOOD);