maintainers: Remove loewenheim

maintainers/maintainer-list.nix

···
     githubId = 918448;
     name = "Anthony Lodi";
   };
-  loewenheim = {
-    email = "[e-mail]";
-    github = "loewenheim";
-    githubId = 7622248;
-    name = "Sebastian Zivota";
-  };
   logo = {
     email = "[e-mail]";
     matrix = "@logo4poop:matrix.org";

pkgs/development/python-modules/vdirsyncer/default.nix

···
     homepage = "https://github.com/pimutils/vdirsyncer";
     changelog = "https://github.com/pimutils/vdirsyncer/blob/v${version}/CHANGELOG.rst";
     license = licenses.bsd3;
-    maintainers = with maintainers; [ loewenheim ];
+    maintainers = [ ];
     mainProgram = "vdirsyncer";
   };
 }

pkgs/development/tools/sentry-cli/default.nix

···
     description = "A command line utility to work with Sentry";
     mainProgram = "sentry-cli";
     changelog = "https://github.com/getsentry/sentry-cli/raw/${version}/CHANGELOG.md";
-    maintainers = with maintainers; [ rizary loewenheim ];
+    maintainers = with maintainers; [ rizary ];
   };
 }