Remove "none" test to be able to manage bind mounts

This impact /var/tmp bind mount. If a device don't have a mount path
(none), the `grep` in /etc/mtab will ignore this device.

remountdefault

@@ -4,7 +4,7 @@
 
 if [ "$(id -u)" -eq 0 ]; then
 	# get the mountpath list from fstab
-	for mountpath in $(grep -v -E "(^#|none)" /etc/fstab | awk '{print $2}'); do
+	for mountpath in $(grep -v -E "(^#)" /etc/fstab | awk '{print $2}'); do
 		# ensure "${mountpath}" is already mounted
 		if grep -q " ${mountpath} " /etc/mtab; then
 			mount "${mountpath}" -o remount