By default the theme displays two links overlaid the Portfolio thumbnail.

You need to look for the following code found in the shortcode-processing.php file:

//image
 else {
 '<a href="'. $featured_image[0].'" class="pretty_photo">'.__("View Larger1", NECTAR_THEME_NAME).'</a> '
 }
 
 if($lightbox_only != 'true') {
 echo '<a href="' . $the_project_link . '">'.__("More Details2", NECTAR_THEME_NAME).'</a>'; 
 }
//This change removes the superfluous “View Larger” link -which simply pops a Lightbox -and simplifies call to action by showing only one link to the user.

(continued) and change it to:

//image
   else {
      echo '<a href="' . $the_project_link . '">More details</a> ';
      //'<a href="'. $featured_image[0].'" class="pretty_photo">'.__("View Larger1", NECTAR_THEME_NAME).'</a> '
   }
 
   /*if($lightbox_only != 'true') {
      echo '<a href="' . $the_project_link . '">ss2</a> ';
      //echo '<a href="' . $the_project_link . '">'.__("More Details2", NECTAR_THEME_NAME).'</a>'; 
} */

Now your Portfolio thumbnails should look like:

This change removes the superfluous “View Larger” link -which simply pops a Lightbox -and simplifies call to action by showing only one link to the user.