删除Wordpress占位符特色图片

Question

我目前正在尝试删除特色图片的占位符div /矩形。占位符用于“关于”和“联系”页面，不需要。这是我在页面上的代码。我写PHP并不好，我还在学习Wordpress

<!-- Start the Loop. -->
<div id="container2">
  <?php
    $temp = $wp_query;
    $wp_query= null;
    $wp_query = new WP_Query('post_type=page');
    while ($wp_query->have_posts()) : $wp_query->the_post();
  ?>
<div class="brick">
<div class="brick_featured_image">
  <?php if ( has_post_thumbnail() ) {
    $size=100;
  ?>
<a href="<?php the_permalink() ?>" rel="bookmark" title="Click to view: 
  <?php the_title_attribute(); ?>">
  <?php the_post_thumbnail( $size );  }  ?>
</a>
</div>


</div>
  <?php endwhile;?>
 <?php $wp_query = null; $wp_query = $temp;?>
 <!-- stop The Loop. -->