dust: remove aaronjheng from maintainers

pkgs/by-name/du/dust/package.nix

···
     changelog = "https://github.com/bootandy/dust/releases/tag/v${finalAttrs.version}";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [
-      aaronjheng
       defelo
     ];
     mainProgram = "dust";