apngasm{,_2}: move to by-name/ (#540113)

pkgs/by-name/ap/apngasm_2/package.nix

@@ -30,7 +30,9 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_LINK = "-lzopfli";
 
   installPhase = ''
+    runHook preInstall
     install -Dt $out/bin apngasm
+    runHook postInstall
   '';
 
   enableParallelBuilding = true;

pkgs/top-level/all-packages.nix

@@ -8437,9 +8437,6 @@ with pkgs;
   );
   android-studio-for-platform = androidStudioForPlatformPackages.stable;
 
-  apngasm = callPackage ../applications/graphics/apngasm { };
-  apngasm_2 = callPackage ../applications/graphics/apngasm/2.nix { };
-
   arelle = with python3Packages; toPythonApplication arelle;
 
   astroid = callPackage ../applications/networking/mailreaders/astroid {