treewide: remove wkennington as maintainer

He prefers to contribute to his own nixpkgs fork triton.
Since he is still marked as maintainer in many packages
this leaves the wrong impression he still maintains those.

pkgs/development/libraries/hidapi/default.nix

@@ -23,6 +23,5 @@ stdenv.mkDerivation rec {
     # Actually, you can chose between GPLv3, BSD or HIDAPI license (more liberal)
     license = licenses.bsd3;
     platforms = platforms.unix;
-    maintainers = with maintainers; [ wkennington ];
   };
 }