Remove collapse icon-- functionality not working.

Even when the icon is updated to fa, nothing happens when
the icon is clicked.

TNL-3799

openassessment/templates/openassessmentblock/edit/oa_edit_criterion.html

 {% load i18n %}
 {% spaceless %}
-<li class="openassessment_criterion is-collapsible" data-criterion="{{ criterion_name }}">
+<li class="openassessment_criterion" data-criterion="{{ criterion_name }}">
     <div class="openassessment_container_header openassessment_criterion_header view-outline">
-        <a class="action expand-collapse collapse"><i class="icon-caret-down ui-toggle-expansion"></i></a>
         <div class="openassessment_container_header_title_box openassessment_criterion_header_title_box">
             <h6 class="openassessment_container_header_title openassessment_criterion_header_title">{% trans "Criterion" %}</h6>
             <p class="openassessment_container_guide openassessment_criterion_guide">{% trans "You cannot delete a criterion after the assignment has been released." %}</p>

openassessment/templates/openassessmentblock/edit/oa_edit_prompt.html

 {% load i18n %}
 {% spaceless %}
-<li class="openassessment_prompt is-collapsible" data-prompt="{{ prompt_uuid }}">
+<li class="openassessment_prompt" data-prompt="{{ prompt_uuid }}">
 
     <div class="openassessment_container_header openassessment_prompt_header view-outline">
-        <a class="action expand-collapse collapse"><i class="icon-caret-down ui-toggle-expansion"></i></a>
         <div class="openassessment_container_header_title_box openassessment_prompt_header_title_box">
             <h6 class="openassessment_container_header_title openassessment_prompt_header_title">{% trans "Prompt" %}</h6>
             <p class="openassessment_container_guide openassessment_prompt_guide">{% trans "You cannot delete a prompt after the assignment has been released." %}</p>

openassessment/templates/openassessmentblock/edit/oa_training_example.html

 {% load i18n %}
 {% spaceless %}
-<li class="openassessment_training_example is-collapsible">
+<li class="openassessment_training_example">
 
     <div class="openassessment_training_example_header view-outline">
-        <a class="action expand-collapse collapse">
-            <i class="icon-caret-down ui-toggle-expansion"></i>
-        </a>
         <h6 class="openassessment_training_example_header_title">
             {% trans "Scored Response" %}
         </h6>

openassessment/xblock/static/sass/oa/utilities/_developer.scss

@@ -856,22 +856,6 @@ $link-hover: $edx-blue-l1 !default; // from our Pattern Library http://ux.edx.or
       }
     }
 
-    .openassessment_criterion.collapsed {
-      .openassessment_criterion_body{
-        display: none;
-      }
-      .openassessment_criterion_header{
-        .action.expand-collapse {
-          @include float(left);
-          .ui-toggle-expansion {
-            @include transform(rotate(bidi-rotate-angle(-90deg)));
-            @include transform-origin(50% 50%);
-            color: $edx-gray-d3;
-          }
-        }
-      }
-    }
-
     .openassessment_criterion_option{
       @include padding(5px, 5px, 5px, 15px);
 
@@ -1056,16 +1040,7 @@ $link-hover: $edx-blue-l1 !default; // from our Pattern Library http://ux.edx.or
       border-bottom: 1px solid;
       overflow: auto;
       color: $edx-gray-d2;
-      .action.expand-collapse {
-        @include float(left);
-        .ui-toggle-expansion {
-          cursor: pointer;
-          color: $edx-gray-d2;
-        }
-        .ui-toggle-expansion:hover{
-          color: $edx-gray-d1;
-        }
-      }
+
       .openassessment_training_example_header_title {
         text-transform: uppercase;
         width: 50%;
@@ -1178,28 +1153,6 @@ $link-hover: $edx-blue-l1 !default; // from our Pattern Library http://ux.edx.or
     content: "\f067";
     margin: 0 10px;
   }
-
-  .openassessment_training_example.collapsed {
-    .openassessment_training_example_body {
-      display: none;
-    }
-    .openassessment_training_example_header {
-      .action.expand-collapse {
-        @include float(left);
-        .ui-toggle-expansion {
-          @include transform(rotate(bidi-rotate-angle(-90deg)));
-          @include transform-origin(50% 50%);
-          .icon-caret-down:before {
-            color: #009fe6;
-          }
-          .icon-caret-down:before:hover {
-            color: $edx-gray-d3;
-            cursor: pointer;
-          }
-        }
-      }
-    }
-  }
 }
 
 #openassessment-editor .wrapper-comp-settings .list-input.settings-list .field.comp-setting-entry select {