treewide: largely remove danth from maintainers

I have not used most of these in a while, so have no interest in
maintaining them any more.

nixos/modules/programs/firefox.nix

@@ -327,7 +327,6 @@ in
   };
 
   meta.maintainers = with lib.maintainers; [
-    danth
     linsui
   ];
 }

nixos/modules/services/web-apps/ocis.nix

@@ -202,7 +202,6 @@ in
 
   meta.maintainers = with lib.maintainers; [
     bhankas
-    danth
     ramblurr
   ];
 }

pkgs/by-name/as/ascii-image-converter/package.nix

@@ -21,7 +21,7 @@ buildGoModule (finalAttrs: {
     description = "Convert images into ASCII art on the console";
     homepage = "https://github.com/TheZoraiz/ascii-image-converter#readme";
     license = lib.licenses.asl20;
-    maintainers = with lib.maintainers; [ danth ];
+    maintainers = [ ];
     mainProgram = "ascii-image-converter";
   };
 })

pkgs/by-name/he/helix-unwrapped/package.nix

@@ -83,7 +83,6 @@ rustPlatform.buildRustPackage (
       mainProgram = "hx";
       maintainers = with lib.maintainers; [
         aciceri
-        danth
         yusdacra
       ];
     };

pkgs/by-name/oc/ocis_5-bin/package.nix

@@ -67,7 +67,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [
       ramblurr
       bhankas
-      danth
       ramblurr
     ];
 

pkgs/by-name/st/starship/package.nix

@@ -65,7 +65,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
     changelog = "https://github.com/starship/starship/releases/tag/v${finalAttrs.version}";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [
-      danth
       Frostman
       da157
       sigmasquadron