refactor: Removes the deprecated DASHBOARD_FILTERS_EXPERIMENTAL feature flag (#26330)

superset-frontend/src/visualizations/presets/MainPreset.js

@@ -16,7 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
-import { isFeatureEnabled, Preset, FeatureFlag } from '@superset-ui/core';
+import { Preset } from '@superset-ui/core';
 import CalendarChartPlugin from '@superset-ui/legacy-plugin-chart-calendar';
 import ChordChartPlugin from '@superset-ui/legacy-plugin-chart-chord';
 import CountryMapChartPlugin from '@superset-ui/legacy-plugin-chart-country-map';
@@ -73,7 +73,6 @@ import {
   TimeFilterPlugin,
   TimeColumnFilterPlugin,
   TimeGrainFilterPlugin,
-  GroupByFilterPlugin,
 } from 'src/filters/components';
 import { PivotTableChartPlugin as PivotTableChartPluginV2 } from '@superset-ui/plugin-chart-pivot-table';
 import { HandlebarsChartPlugin } from '@superset-ui/plugin-chart-handlebars';
@@ -82,12 +81,6 @@ import TimeTableChartPlugin from '../TimeTable';
 
 export default class MainPreset extends Preset {
   constructor() {
-    const experimentalplugins = isFeatureEnabled(
-      FeatureFlag.DASHBOARD_FILTERS_EXPERIMENTAL,
-    )
-      ? [new GroupByFilterPlugin().configure({ key: 'filter_groupby' })]
-      : [];
-
     super({
       name: 'Legacy charts',
       presets: [new DeckGLChartPreset()],
@@ -164,7 +157,6 @@ export default class MainPreset extends Preset {
         new EchartsSunburstChartPlugin().configure({ key: 'sunburst_v2' }),
         new HandlebarsChartPlugin().configure({ key: 'handlebars' }),
         new EchartsBubbleChartPlugin().configure({ key: 'bubble_v2' }),
-        ...experimentalplugins,
       ],
     });
   }