treewide: remove worldofpeace from meta.maintainers

(It was requested by them.)
I left one case due to fetching from their personal repo:
pkgs/desktops/pantheon/desktop/extra-elementary-contracts/default.nix

pkgs/development/libraries/polkit/default.nix

@@ -116,6 +116,6 @@ stdenv.mkDerivation rec {
     description = "A toolkit for defining and handling the policy that allows unprivileged processes to speak to privileged processes";
     license = licenses.gpl2;
     platforms = platforms.unix;
-    maintainers = with maintainers; [ worldofpeace ];
+    maintainers = with maintainers; [ ];
   };
 }