treewide: remove the-kenny from maintainers

@the-kenny did a good job in the past and is set as maintainer in many package,
however since 2017-2018 he stopped contributing. To create less confusion
in pull requests when people try to request his feedback, I removed him as
maintainer from all packages.

pkgs/development/tools/ws/default.nix

@@ -20,7 +20,6 @@ buildGoPackage rec {
     description = "websocket command line tool";
     homepage    = "https://github.com/hashrocket/ws";
     license     = licenses.mit;
-    maintainers = [ maintainers.the-kenny ];
     platforms   = platforms.unix;
   };
 }