refactor(treeView): remove not implemented functionality

src/app/pages/components/tree/tree.html

@@ -16,12 +16,6 @@
             <div>
               <button class="btn btn-primary" ng-click="refresh()">Refresh</button>
             </div>
-            <div>
-              <div class="form-group text-left search-container">
-                <label for="search">Filter</label>
-                <input id="search" type="text" class="form-control" ng-model="query" ng-change="find()">
-              </div>
-            </div>
           </div>
         </div>
         <div class="col-sm-8">