fmit: maintain, delete custom postInstall (#341684)

pkgs/applications/audio/fmit/default.nix

@@ -36,17 +36,6 @@ mkDerivation rec {
       PREFIXSHORTCUT=$out"
   '';
 
-  postInstall = ''
-    mkdir -p $out/share/applications
-    ln -s $out/fmit.desktop $out/share/applications/fmit.desktop
-
-    mkdir -p $out/share/icons/hicolor/128x128/apps
-    ln -s $out/fmit.png $out/share/icons/hicolor/128x128/apps/fmit.png
-
-    mkdir -p $out/share/icons/hicolor/scalable/apps
-    ln -s $out/fmit.svg $out/share/icons/hicolor/scalable/apps/fmit.svg
-  '';
-
   meta = with lib; {
     description = "Free Musical Instrument Tuner";
     longDescription = ''
@@ -55,6 +44,7 @@ mkDerivation rec {
     '';
     homepage = "http://gillesdegottex.github.io/fmit/";
     license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ orivej ];
     platforms = platforms.linux;
   };
 }