armagetronad, armagetronad-dedicated: move to by-name, modernize

pkgs/by-name/ar/armagetronad-dedicated/package.nix

@@ -0,0 +1,7 @@
+{
+  armagetronad,
+}:
+
+armagetronad.override {
+  dedicatedServer = true;
+}

pkgs/by-name/ar/armagetronad/package.nix

@@ -248,13 +248,13 @@ let
             tests.armagetronad = nixosTests.armagetronad;
           };
 
-      meta = with lib; {
+      meta = {
         inherit mainProgram;
         homepage = "https://www.armagetronad.org";
         description = "Multiplayer networked arcade racing game in 3D similar to Tron";
-        maintainers = with maintainers; [ numinit ];
-        license = licenses.gpl2Plus;
-        platforms = platforms.linux;
+        maintainers = with lib.maintainers; [ numinit ];
+        license = lib.licenses.gpl2Plus;
+        platforms = lib.platforms.linux;
       };
     };
 in

pkgs/top-level/all-packages.nix

@@ -13288,10 +13288,6 @@ with pkgs;
   anki-bin = callPackage ../games/anki/bin.nix { };
   anki-sync-server = callPackage ../games/anki/sync-server.nix { };
 
-  armagetronad = callPackage ../games/armagetronad { };
-
-  armagetronad-dedicated = callPackage ../games/armagetronad { dedicatedServer = true; };
-
   art = callPackage ../by-name/ar/art/package.nix {
     fftw = fftwSinglePrec;
   };