fix(frontend): remove quivr assistant for now (#2801)

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

frontend/app/assistants/page.tsx

@@ -1,5 +1,5 @@
 "use client";
-import { usePathname } from "next/navigation";
+import { redirect, usePathname } from "next/navigation";
 import { useEffect, useState } from "react";
 
 import { Assistant } from "@/lib/api/assistants/types";
@@ -13,7 +13,7 @@ import { redirectToLogin } from "@/lib/router/redirectToLogin";
 import { AssistantModal } from "./AssistantModal/AssistantModal";
 import styles from "./page.module.scss";
 
-const Search = (): JSX.Element => {
+const Assistants = (): JSX.Element => {
   const pathname = usePathname();
   const { session } = useSupabase();
   const [assistants, setAssistants] = useState<Assistant[]>([]);
@@ -26,6 +26,8 @@ const Search = (): JSX.Element => {
   const { getAssistants } = useAssistants();
 
   useEffect(() => {
+    // REMOVE FOR NOW ACCESS TO QUIVR ASSISTANTS
+    redirect("/search");
     if (session === null) {
       redirectToLogin();
     }
@@ -104,4 +106,4 @@ const Search = (): JSX.Element => {
   );
 };
 
-export default Search;
+export default Assistants;

frontend/lib/components/Menu/Menu.tsx

@@ -11,7 +11,6 @@ import { useUserSettingsContext } from "@/lib/context/UserSettingsProvider/hooks
 
 import styles from "./Menu.module.scss";
 import { AnimatedDiv } from "./components/AnimationDiv";
-import { AssistantsButton } from "./components/AssistantsButton/AssistantsButton";
 import { DiscussionButton } from "./components/DiscussionButton/DiscussionButton";
 import { HomeButton } from "./components/HomeButton/HomeButton";
 import { ProfileButton } from "./components/ProfileButton/ProfileButton";
@@ -74,7 +73,6 @@ export const Menu = (): JSX.Element => {
                 <DiscussionButton />
                 <HomeButton />
                 <StudioButton />
-                <AssistantsButton />
                 <ThreadsButton />
               </div>
               <div className={styles.block}>