Remove single tab "ALL" from course run detail page.

ECOM-6824

course_discovery/templates/publisher/course_run_detail.html

@@ -22,8 +22,6 @@
                     {% comment %}Translators: DRUPAL is an edX marketing site.{% endcomment %}
                     <button data-tab="#tab-4">{% trans "DRUPAL" %}</button>
                     <button data-tab="#tab-5">Salesforce</button>
-              {% else %}
-                <button class="selected" disabled="disabled" data-tab="#tab-1">{% trans "All" %}</button>
                 {% endif %}
             </div>
         </nav>