Remove version from Mastodon footer

It's not needed since the hometown version is already listed.

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

@@ -109,8 +109,6 @@ class LinkFooter extends PureComponent {
           <Link to='/keyboard-shortcuts'><FormattedMessage id='footer.keyboard_shortcuts' defaultMessage='Keyboard shortcuts' /></Link>
           {DividingCircle}
           <a href={source_url} rel='noopener noreferrer' target='_blank'><FormattedMessage id='footer.source_code' defaultMessage='View source code' /></a>
-          {DividingCircle}
-          <span className='version'>v{version}</span>
         </p>
       </div>
     );