treewide: remove worldofpeace from meta.maintainers

(It was requested by them.)
I left one case due to fetching from their personal repo:
pkgs/desktops/pantheon/desktop/extra-elementary-contracts/default.nix

pkgs/applications/misc/notejot/default.nix

@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     description = "Stupidly-simple sticky notes applet";
     homepage = "https://github.com/lainsce/notejot";
     license = licenses.gpl2Plus;
-    maintainers = with maintainers; [ worldofpeace ];
+    maintainers = with maintainers; [ ];
     platforms = platforms.linux;
   };
 }

pkgs/applications/misc/olifant/default.nix

@@ -64,6 +64,6 @@ stdenv.mkDerivation rec {
     description = "A simple Mastodon client designed for elementary OS, originally developed by @bleakgrey";
     homepage = "https://github.com/cleac/olifant";
     license = licenses.gpl3;
-    maintainers = with maintainers; [ worldofpeace ];
+    maintainers = with maintainers; [ ];
   };
 }

pkgs/applications/misc/ulauncher/default.nix

@@ -115,6 +115,6 @@ python3Packages.buildPythonApplication rec {
     homepage = "https://ulauncher.io/";
     license = licenses.gpl3;
     platforms = platforms.linux;
-    maintainers = with maintainers; [ aaronjanse worldofpeace ];
+    maintainers = with maintainers; [ aaronjanse ];
   };
 }