fix(templates): Remove stray variable.

Author: miketierney

src/bootstrap/choices.tpl.html

@@ -4,7 +4,6 @@
   <li class="ui-select-choices-group">
     <div class="divider" ng-show="$select.isGrouped && $index > 0"></div>
     <div ng-show="$select.isGrouped" class="ui-select-choices-group-label dropdown-header">{{$group}}</div>
-    {{item}}
     <div class="ui-select-choices-row" ng-class="{active: $select.isActive(this), disabled: $select.isDisabled(this)}">
       <a href="javascript:void(0)" class="ui-select-choices-row-inner"></a>
     </div>