unused method removed

frontend-js/src/main/js/ServerConnector.js

@@ -440,13 +440,6 @@ ServerConnector.pointToString = function(point) {
   return point.x.toFixed(2) + "," + point.y.toFixed(2);
 };
 
-ServerConnector.columnsToString = function(columns) {
-  if (columns === undefined) {
-    return "";
-  }
-  return columns;
-};
-
 ServerConnector.getModelsUrl = function(queryParams) {
   var modelId = this.getIdOrAsterisk(queryParams.modelId);
   var overlayId = queryParams.overlayId;