xmonad-with-packages: Remove ghc manpage

This package should only install the xmonad manpage but not GHC's (it
doesn't even install GHC in the path). Installing both manpages makes
this package conflict with the GHC derivation.

Fixes #60914

pkgs/applications/window-managers/xmonad/wrapper.nix

@@ -8,8 +8,7 @@ in stdenv.mkDerivation {
   nativeBuildInputs = [ makeWrapper ];
 
   buildCommand = ''
-    mkdir -p $out/bin $out/share
-    ln -s ${xmonadEnv}/share/man $out/share/man
+    install -D ${xmonadEnv}/share/man/man1/xmonad.1.gz $out/share/man/man1/xmonad.1.gz
     makeWrapper ${xmonadEnv}/bin/xmonad $out/bin/xmonad \
       --set NIX_GHC "${xmonadEnv}/bin/ghc" \
       --set XMONAD_XMESSAGE "${xmessage}/bin/xmessage"