wipefreespace: remove catap as maintainer

pkgs/by-name/wi/wipefreespace/package.nix

···
     homepage = "https://wipefreespace.sourceforge.io";
     license = lib.licenses.gpl2Plus;
     platforms = lib.platforms.linux;
-    maintainers = with lib.maintainers; [ catap ];
+    maintainers = with lib.maintainers; [ ];
     mainProgram = "wipefreespace";
   };
 })