No need - no swap file/partition on Vagrant VMs

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

morph/lib/hardware-vagrant.nix

@@ -20,7 +20,7 @@
     boot.loader.grub.device = "/dev/vda";
 
     boot.initrd.availableKernelModules = [ "ata_piix" "virtio_pci" "virtio_blk" "sd_mod" "sr_mod" ];
-    boot.kernel.sysctl = { "vm.swappiness" = 1; };
+    boot.kernel.sysctl = { "vm.swappiness" = 0; };
     boot.kernelParams = [ "console=tty0" "console=ttyS0,115200" ];
 
     # remove the fsck that runs at startup. It will always fail to run, stopping