chore: Removes icon warnings from tests (#23054)

superset-frontend/src/explore/components/controls/DndColumnSelectControl/DndMetricSelect.test.tsx

@@ -30,14 +30,6 @@ import { DndMetricSelect } from 'src/explore/components/controls/DndColumnSelect
 import { AGGREGATES } from 'src/explore/constants';
 import { EXPRESSION_TYPES } from '../MetricControl/AdhocMetric';
 
-jest.mock('src/components/Icons/Icon', () => ({
-  __esModule: true,
-  default: ({ fileName }: { fileName: string }) => (
-    <span role="img" aria-label={fileName.replace('_', '-')} />
-  ),
-  StyledIcon: () => <span />,
-}));
-
 const defaultProps = {
   savedMetrics: [
     {