avrdude: remove avrdude.ps from docs

This PostScript file contains the full path of the dvips executable in
comments, therefore the resulting package gets a runtime dependency on
the texlive-combined-medium package, which adds almost 1GB to the
closure size.

The same documentation is still available in the PDF format, which is
probably more useful in 2023.

pkgs/development/embedded/avrdude/default.nix

@@ -27,6 +27,11 @@ stdenv.mkDerivation rec {
     "-DBUILD_DOC=ON"
   ];
 
+  # dvips output references texlive in comments, resulting in a huge closure
+  postInstall = lib.optionalString docSupport ''
+    rm $out/share/doc/${pname}/*.ps
+  '';
+
   meta = with lib; {
     description = "Command-line tool for programming Atmel AVR microcontrollers";
     longDescription = ''