Remove unneeded configs from astral

hosts/astral/default.nix

@@ -20,7 +20,6 @@
   networking = {
     hostName = "astral";
     firewall.allowedTCPPorts = [ 80 443 ];
-    networkmanager.enable = true;
   };
 
   users.defaultUserShell = pkgs.fish;
@@ -39,22 +38,9 @@
 
   programs.fish.enable = true;
 
-  programs.git = {
-    enable = true;
-    lfs.enable = true;
-    config = {
-      init.defaultBranch = "master";
-      user = {
-        email = "git@nettika.cat";
-        name = "Nettika";
-      };
-      credential.helper = "store";
-    };
-  };
-
   documentation.man.generateCaches = false;
 
-  promptSymbol = "✴️";
+  promptSymbol = "👻";
 
   time.timeZone = "America/Los_Angeles";