Remove maintainership

With this patch I remove myself as a maintainer for all packages I
currently maintain.

This is due the fact that I will be basically off the grid from May 2018
until early 2019, as I will be on a trip through north america.

I will revert this patch as soon as I'm back, as I plan to continue
contributing to nixpkgs then.
But as I cannot maintain anything during that time, I'd like to get this
patch merged.

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

pkgs/tools/networking/http-prompt/default.nix

@@ -28,7 +28,7 @@ pythonPackages.buildPythonApplication rec {
     description = "An interactive command-line HTTP client featuring autocomplete and syntax highlighting";
     homepage = https://github.com/eliangcs/http-prompt;
     license = licenses.mit;
-    maintainers = with maintainers; [ matthiasbeyer ];
+    maintainers = with maintainers; [ ];
     platforms = platforms.linux; # can only test on linux
   };
 }