fix: remove email display from user profile page

- Remove email from profile header display for privacy
- Keep username and full name visible

src/pages/UserProfilePage.tsx

@@ -198,7 +198,6 @@ export function UserProfilePage() {
                         : profile.username}
                     </h1>
                     <p className="text-gray-600">@{profile.username}</p>
-                    <p className="text-sm text-gray-500">{profile.email}</p>
                   </>
                 )}
               </div>