fix(ui): ui compile fail

remove both of them, a new feature is coming soon -  mobile device support setting navbar

ui/components/EmptyChat.tsx

@@ -12,8 +12,6 @@ const EmptyChat = ({
 }) => {
   return (
     <div className="relative">
-      <ThemeSwitcher size={17} className="absolute top-2 right-0 lg:hidden" />
-
       <div className="flex flex-col items-center justify-center min-h-screen max-w-screen-sm mx-auto p-2 space-y-8">
         <h2 className="text-black/70 dark:text-white/70 text-3xl font-medium -mt-8">
           Research begins here.

ui/components/Navbar.tsx

@@ -50,8 +50,6 @@ const Navbar = ({ messages }: { messages: Message[] }) => {
       </div>
       <p className="hidden lg:flex">{title}</p>
 
-      <ThemeSwitcher size={17} className="lg:hidden ml-auto mr-4" />
-
       <div className="flex flex-row items-center space-x-4">
         <Share
           size={17}