Remove Sign Up button when using OIDC (#5431)

* Remove Sign Up button when using OIDC

* Remove SignUp Button on Join with OIDC

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Co-authored-by: Ahmad Farhat <ahmad.af.farhat@gmail.com>

app/javascript/components/home/AuthButtons.jsx

@@ -46,7 +46,6 @@ export default function AuthButtons({ direction }) {
         <input type="hidden" name="authenticity_token" value={document.querySelector('meta[name="csrf-token"]').content} />
         <input type="hidden" name="current_provider" value={env?.CURRENT_PROVIDER} />
         <Stack direction={direction} gap={2}>
-          <Button variant="brand-outline-color" className="btn" type="submit">{t('authentication.sign_up')}</Button>
           <Button variant="brand" className="btn" type="submit">{t('authentication.sign_in')}</Button>
         </Stack>
       </Form>

app/javascript/components/rooms/room/join/RequireAuthentication.jsx

@@ -36,7 +36,6 @@ export default function RequireAuthentication({ path }) {
           env?.EXTERNAL_AUTH ? (
             <Form action={process.env.OMNIAUTH_PATH} method="POST" data-turbo="false">
               <input type="hidden" name="authenticity_token" value={document.querySelector('meta[name="csrf-token"]').content} />
-              <Button variant="brand-outline-color" className="btn btn-lg m-2" type="submit">{t('authentication.sign_up')}</Button>
               <Button variant="brand" className="btn btn-lg m-2" type="submit">{t('authentication.sign_in')}</Button>
             </Form>
           ) : (