Update boot.nix

Author: vinceff

modules/default/boot.nix

@@ -30,10 +30,9 @@ in
         themePackages = [ plymouth-glfos ];
       };
       kernel.sysctl = {
-        vm_swappiness = 100;
+        vm_swappiness = 10;
         vm_vfs_cache_pressure = 50;
         vm_dirty_bytes = 268435456;
-        "vm.page-cluster" = 0;
         "vm.max_map_count" = 16777216;
         vm_dirty_background_bytes = 67108864;
         vm_dirty_writeback_centisecs = 1500;