remove neovim

Signed-off-by: Michael Thomson <michael@michaelthomson.dev>

hosts/thinkpad/configuration.nix

@@ -35,7 +35,6 @@
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
 
   environment.systemPackages = with pkgs; [
-    neovim
     wget
     git
     curl

hosts/thinkpad/home.nix

@@ -5,7 +5,7 @@
     ../../modules/home-manager/i3
     ../../modules/home-manager/ssh
     ../../modules/home-manager/git
-    ../../modules/home-manager/neovim
+    ../../modules/home-manager/nixvim
     ../../modules/home-manager/wezterm
     ../../modules/home-manager/zsh
     ../../modules/home-manager/tmux