Remove shortcode from the_excerpt

Hello guys,
i my frontpage i am using a custom query

<?php if ( $the_query->have_posts() ) : ?>
<?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
<div class="news">
<div class="date"><?php the_time( 'd.j.Y') ?>:</div>
<div class="new"><a href="<?php echo the_permalink(); ?>"><?php the_excerpt() ?></a></div>												</div>									  <?php endwhile; ?>										  <?php wp_reset_query(); ?>										<?php endif; ?>

I am also using a social plugin that shows social button before the content inside the posts. BUT this shortcode is also shown when i use the excerpt function. How do i disable this shortcode from showing??

I have used the following with no lack.

Also i used the following :

function remove_shortcode_from_index($excerpt) {
  if ( is_home() ) {
    $excerpt = strip_shortcodes( $excerpt );
  }
  return $excerpt;
}
add_filter('the_excerpt', 'remove_shortcode_from_index');

but it does not work.

Any other idea??
Thanks
– Konstantinos