fix(select-choices): Possible fix for angular-ui#1355

...at the cost of potential unnecessary watches when dropdown is closed.
But the premise is that, until the resulting errors are fixed, the
preference is to avoid the errors for now.

Closes angular-ui#1355

Author: Dondi Dionisio

src/uiSelectChoicesDirective.js

@@ -44,8 +44,7 @@ uis.directive('uiSelectChoices',
           throw uiSelectMinErr('rows', "Expected 1 .ui-select-choices-row but got '{0}'.", choices.length);
         }
 
-        choices.attr('ng-repeat', $select.parserResult.repeatExpression(groupByExp))
-            .attr('ng-if', '$select.open'); //Prevent unnecessary watches when dropdown is closed
+        choices.attr('ng-repeat', $select.parserResult.repeatExpression(groupByExp));
         if ($window.document.addEventListener) {  //crude way to exclude IE8, specifically, which also cannot capture events
           choices.attr('ng-mouseenter', '$select.setActiveItem('+$select.parserResult.itemName +')')
               .attr('ng-click', '$select.select(' + $select.parserResult.itemName + ',$select.skipFocusser,$event)');