Remove duplicate entries of courses.

lms/templates/course.html

@@ -31,31 +31,3 @@
     <p class="university">${course.get_about_section('university')}</p>
   </div>
 </article>
-
-<article id="${course.id}"class="course">
-  <div class="inner-wrapper">
-    <header class="course-preview">
-        <a href="${reverse('about_course', args=[course.id])}">
-        <hgroup>
-          <h2>${course.get_about_section('title')}</h2>
-        </hgroup>
-        <div class="info-link">&#x2794;</div>
-      </a>
-    </header>
-    <section class="info">
-      <div class="cover-image">
-        <img src="${static.url('images/courses/history.png')}">
-      </div>
-      <div class="desc">
-        <p>An advanced introduction to analog circuits. An advanced introduction to analog circuits.</p>
-      </div>
-      <div class="bottom">
-        <a href="#" class="university">${course.get_about_section('university')}</a>
-        <span class="start-date">7/23/12</span>
-      </div>
-    </section>
-  </div>
-  <div class="meta-info">
-    <p class="university">${course.get_about_section('university')}</p>
-  </div>
-</article>