remove unused file (#26715)

frontend/src/metabase/visualizations/shared/utils/format.ts

-import {
-  DatasetColumn,
-  RowValue,
-  VisualizationSettings,
-} from "metabase-types/api";
-import { ChartColumns } from "metabase/visualizations/lib/graph/columns";
-import {
-  ChartTicksFormatters,
-  ValueFormatter,
-} from "metabase/visualizations/shared/types/format";
-import { getStackOffset } from "metabase/visualizations/lib/settings/stacking";