[eem] disable entity discovery on plugin startup

x-pack/platform/plugins/shared/entity_manager/server/lib/entities/built_in/index.ts

@@ -6,17 +6,6 @@
  */
 
 import { EntityDefinition } from '@kbn/entities-schema';
-import { builtInServicesFromEcsEntityDefinition } from './services_from_ecs_data';
-import { builtInHostsFromEcsEntityDefinition } from './hosts_from_ecs_data';
-import { builtInContainersFromEcsEntityDefinition } from './containers_from_ecs_data';
-
-import * as kubernetes from './kubernetes';
-
 export { BUILT_IN_ID_PREFIX } from './constants';
 
-export const builtInDefinitions: EntityDefinition[] = [
-  builtInServicesFromEcsEntityDefinition,
-  builtInHostsFromEcsEntityDefinition,
-  builtInContainersFromEcsEntityDefinition,
-  ...Object.values(kubernetes),
-];
+export const builtInDefinitions: EntityDefinition[] = [];