Fixed deleting row bug (#4919)

public/app/features/dashboard/partials/settings.html

@@ -86,7 +86,7 @@
 					<button class="btn btn-inverse gf-from-btn" ng-click="_.move(dashboard.rows,$index,$index+1)">
 						<i ng-class="{'invisible': $last}" class="fa fa-arrow-down"></i>
 					</button>
-					<button class="btn btn-inverse gf-form-btn" click="dashboard.rows = _.without(dashboard.rows,row)">
+					<button class="btn btn-inverse gf-form-btn" ng-click="dashboard.rows = _.without(dashboard.rows,row)">
 						<i class="fa fa-trash"></i>
 					</button>
 				</div>