chore: remove unused options builder

packages/grafana-data/src/utils/OptionsUIBuilders.ts

@@ -84,21 +84,6 @@ export class FieldConfigEditorBuilder<TOptions> extends OptionsUIRegistryBuilder
     });
   }
 
-  addMultiSelect<TOption, TSettings extends SelectFieldConfigSettings<TOption>>(
-    config: FieldConfigEditorConfig<TOptions, TSettings, TOption>
-  ) {
-    return this.addCustomEditor({
-      ...config,
-      id: config.path,
-      override: standardEditorsRegistry.get('multi-select').editor,
-      editor: standardEditorsRegistry.get('multi-select').editor,
-      process: selectOverrideProcessor,
-      // ???
-      shouldApply: config.shouldApply ? config.shouldApply : () => true,
-      settings: config.settings || { options: [] },
-    });
-  }
-
   addRadio<TOption, TSettings>(config: FieldConfigEditorConfig<TOptions, TSettings, TOption>) {
     return this.addCustomEditor({
       ...config,