Revert "model.js clear highlight checkboxes when clearing segmenter"

This reverts commit 240b40ae.
Commit broke several javascript tests

browser/js/model.js

@@ -827,9 +827,6 @@ Model.prototype = {
             this.clone(list[i]).select = false;
         }
         this.updateElemStyle(list);
-        var span = document.getElementById('highlightCheckboxes');
-        span.innerHTML = "";
-
     },
 
     /**