Merge pull request #12415 from edx/christina/delete-unused-files

These old discussion templates are not referenced in the codebase.

lms/templates/discussion/_blank_slate.html

-<%! from django.utils.translation import ugettext as _ %>
-<div class="blank-state">
-  % if performed_search:
-    ${_("Sorry! We can't find anything matching your search. Please try another search.")}
-  % else:
-    ${_("There are no posts here yet. Be the first one to post!")}
-  % endif
-</div>

lms/templates/discussion/_js_data.html

-<%! from django.template.defaultfilters import escapejs %>
-
-<script type="text/javascript">
-  var $$course_id = "${course_id | escapejs}";
-  if (typeof $$annotated_content_info === undefined) {
-    var $$annotated_content_info = {};
-  }
-  $$annotated_content_info = $.extend($$annotated_content_info, JSON.parse("${annotated_content_info | escapejs}"));
-  if (typeof $$discussion_data === undefined) {
-    var $$discussion_data = {};
-  }
-  $$discussion_data = $.extend($$discussion_data, JSON.parse("${discussion_data | escapejs}"));
-</script>

lms/templates/discussion/_recent_active_posts.html

-<%!
-from django.utils.translation import ugettext as _
-from django_comment_client.utils import permalink
-%>
-
-% if recent_active_threads:
-  <article class="discussion-sidebar-following sidebar-module">
-    <header>
-      <h4>${_("Following")}</h4>
-      <!--<a href="#" class="sidebar-view-all">view all &rsaquo;</a>-->
-    </header>
-    <ol class="discussion-sidebar-following-list">
-      % for thread in recent_active_threads:
-        <li><a href="${permalink(thread) | h}"><span class="sidebar-following-name">${thread['title'] | h}</span> <span class="sidebar-vote-count">${thread['votes']['point'] | h}</span></a></li>
-      % endfor
-    <ol>
-  </article>
-% endif

lms/templates/discussion/_search_bar.html

-<%!
-from django.utils.translation import ugettext as _
-from urllib import urlencode
-
-def merge(dic1, dic2):
-  return dict(dic1.items() + dic2.items())
-
-def base_url_for_search():
-  return base_url + '?' + urlencode(merge(query_params, {'page': 1}))
-%>
-
-<form action="${base_url_for_search()}" method="get" class="discussion-search-form">
-  <input class="search-input" type="text" value="${text | h}" id="keywords" autocomplete="off"/>
-  <div class="discussion-link discussion-search-link" href="javascript:void(0)">${_("Search posts")}</div>
-</form>

lms/templates/discussion/_similar_posts.html

-<%! from django.utils.translation import ugettext as _ %>
-% if len(threads) > 0:
-  Similar Posts: 
-  <a class="hide-similar-posts" href="javascript:void(0)">${_("Hide")}</a>
-  <div class="new-post-similar-posts">
-    % for thread in threads:
-      <a class="similar-post" href="${thread['permalink'] | h}">${thread['title'] | h}</a>
-    % endfor
-  </div>
-% endif