Removed unused bad method.

src/mami.js/sidebar/pan-users.jsx

@@ -244,14 +244,6 @@ const MamiSidebarPanelUsers = function() {
             button.element.append(<i class="fas fa-users sidebar-gutter-font-icon"/>);
         },
 
-        // this method is cope (used for KFE exclusive please don't use it elsewhere cuz it will get nuked)
-        getAllUserNames: () => {
-            const names = [];
-            for(const [id, entry] of entries)
-                names.push(entry.name);
-            return names;
-        },
-
         createEntry: info => {
             if(entries.has(info.id))
                 throw 'this user has already been inserted';