hosts: kabtopci: fix path and add mount script

hosts/kabtopci/default.nix

@@ -33,7 +33,7 @@
     grub = {
         enable = true;
         device = "/dev/vda";
-     };
+    };
       timeout = 1;                          # Grub auto select time
     };
   };
@@ -42,8 +42,4 @@
     zsh.enable = true;
   };
 
-  services = {
-    qemuGuest.enable = true;
-  };
-
 }