mxgrub: Remove submenu

This reverts commit 56916ee.

It’s not possible to restrict CLI access in the submenu, so remove it.

mxgrub/mxgrub

@@ -163,13 +163,11 @@ sub has_esp {
 	return !system('blkid -L ESP>/dev/null');
 }
 
-our $submenu="all-other-kernel";
-
 sub get_chosen {
 	my $chosen;
 	open my $p,'-|','grub-editenv','-','list' or die "$!\n";
 	while (<$p>) {
-          /^chosen=(?:$submenu>)?(.+)/ and return $1;
+          /^chosen=(.+)/ and return $1;
 	}
 	close $p or die "$!\n";
 	$? and exit 1;
@@ -269,11 +267,7 @@ if [ -e /etc/local/USB.usb ]; then
 	menuentry "mariuxUSB" { save_env chosen ; linux /boot/bzImage.x86_64 root=LABEL=rootusb $KERNEL_PARAMETER ; initrd /boot/grub/initramfs.igz }
 else
 
-menuentry "$MARIUX_DEFAULT" --unrestricted { set chosen="$submenu>$MARIUX_DEFAULT" ; save_env chosen ; linux /boot/bzImage.x86_64 root=LABEL=root $KERNEL_PARAMETER ; initrd /boot/grub/initramfs.igz }
-
-submenu "$submenu" {
 $kernellist
-}
        if [ \$chosen ]; then
                set default=\$chosen
                unset chosen          # must be clear to get a clean value from menuentry
@@ -342,7 +336,7 @@ sub cmd_install {
 	if ($label eq 'default') {
 		sys('grub-editenv','-','set',"chosen=$MARIUX_DEFAULT");
 	} else {
-		sys('grub-editenv','-','set',"chosen=$submenu>$label");
+		sys('grub-editenv','-','set',"chosen=$label");
 	}
 }