gpgme: Drop multiple outputs (dev and info)

This shouldn't break anything as currently neither dev nor info will be
generated anyway (since both directories don't actually exist at the
install phase - "mv bin dev" would produce the dev output).

This change is required for building fwknop with GnuPG support.

pkgs/development/libraries/gpgme/default.nix

@@ -16,9 +16,6 @@ stdenv.mkDerivation rec {
     sha256 = "0csx3qnycwm0n90ql6gs65if5xi4gqyzzy21fxs2xqicghjrfq2r";
   };
 
-  outputs = [ "out" "dev" "info" ];
-  outputBin = "dev"; # gpgme-config; not so sure about gpgme-tool
-
   propagatedBuildInputs = [ libgpgerror glib libassuan pth ];
 
   nativeBuildInputs = [ pkgconfig gnupg ];