Resolve TODO

Author: vbabich

packages/iris-grid/src/IrisGridMetricCalculator.ts

@@ -377,7 +377,6 @@ export class IrisGridMetricCalculator extends GridMetricCalculator {
 
     const headerText = model.textForColumnHeader(modelColumn, depth);
 
-    // TODO: !!! fix conditional expand/collapse icon width inclusion based on whether the group is expandable
     const isColumnExpandable =
       isExpandableColumnGridModel(model) &&
       model.isColumnExpandable(modelColumn);