Remove the search button from UI header when logged out (#25631)

app/javascript/mastodon/features/ui/components/header.jsx

@@ -91,7 +91,6 @@ class Header extends PureComponent {
 
       content = (
         <>
-          {location.pathname !== '/search' && <Link to='/search' className='button button-secondary' aria-label={intl.formatMessage(messages.search)}><Icon id='search' /></Link>}
           {signupButton}
           <a href='/auth/sign_in' className='button button-tertiary'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Login' /></a>
         </>