range-v3, tl-expected: Remove myself as maintainer

I've only maintained those libraries for Telegram-Desktop which I don't
use and maintain anymore: 42ed8143253

pkgs/development/libraries/range-v3/default.nix

···
     changelog = "https://github.com/ericniebler/range-v3/releases/tag/${version}";
     license = licenses.boost;
     platforms = platforms.all;
-    maintainers = with maintainers; [ primeos ];
+    maintainers = with maintainers; [ ];
   };
 }

pkgs/development/libraries/tl-expected/default.nix

···
     homepage = "https://tl.tartanllama.xyz/en/latest/api/expected.html";
     license = licenses.cc0;
     platforms = platforms.all;
-    maintainers = with maintainers; [ primeos ];
+    maintainers = with maintainers; [ ];
   };
 }