gcc-arm-embedded-{6,7,8,9,10,11,12}: drop (#398204)

Author: prusnak

pkgs/top-level/aliases.nix

@@ -669,6 +669,13 @@ mapAliases {
   gcc8Stdenv = throw "gcc8Stdenv has been removed from Nixpkgs, as it is unmaintained and obsolete"; # Added 2024-11-20
   gcc10StdenvCompat =
     if stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11" then gcc10Stdenv else stdenv; # Added 2024-03-21
+  gcc-arm-embedded-6 = throw "gcc-arm-embedded-6 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-7 = throw "gcc-arm-embedded-7 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-8 = throw "gcc-arm-embedded-8 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-9 = throw "gcc-arm-embedded-9 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-10 = throw "gcc-arm-embedded-10 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-11 = throw "gcc-arm-embedded-11 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
+  gcc-arm-embedded-12 = throw "gcc-arm-embedded-12 has been removed from Nixpkgs as it is unmaintained and obsolete"; # Added 2025-04-12
   gcj = gcj6; # Added 2024-09-13
   gcj6 = throw "gcj6 has been removed from Nixpkgs, as it is unmaintained and obsolete"; # Added 2024-09-13
   gcolor2 = throw "'gcolor2' has been removed due to lack of maintenance upstream and depending on gtk2. Consider using 'gcolor3' or 'eyedropper' instead"; # Added 2024-09-15