[AC-2522] Remove collection enhancements opt-in (#9283)

* Remove FlexibleCollectionsMigration feature flag and code

* Remove api method

libs/common/src/admin-console/abstractions/organization/organization-api.service.abstraction.ts

@@ -82,5 +82,4 @@ export class OrganizationApiServiceAbstraction {
     id: string,
     request: OrganizationCollectionManagementUpdateRequest,
   ) => Promise<OrganizationResponse>;
-  enableCollectionEnhancements: (id: string) => Promise<void>;
 }

libs/common/src/admin-console/services/organization/organization-api.service.ts

@@ -352,15 +352,4 @@ export class OrganizationApiService implements OrganizationApiServiceAbstraction
     await this.syncService.fullSync(true);
     return data;
   }
-
-  async enableCollectionEnhancements(id: string): Promise<void> {
-    await this.apiService.send(
-      "POST",
-      "/organizations/" + id + "/enable-collection-enhancements",
-      null,
-      true,
-      false,
-    );
-    await this.syncService.fullSync(true);
-  }
 }

libs/common/src/enums/feature-flag.enum.ts

@@ -9,7 +9,6 @@ export enum FeatureFlag {
   FlexibleCollectionsV1 = "flexible-collections-v-1", // v-1 is intentional
   VaultOnboarding = "vault-onboarding",
   GeneratorToolsModernization = "generator-tools-modernization",
-  FlexibleCollectionsMigration = "flexible-collections-migration",
   ShowPaymentMethodWarningBanners = "show-payment-method-warning-banners",
   EnableConsolidatedBilling = "enable-consolidated-billing",
   AC1795_UpdatedSubscriptionStatusSection = "AC-1795_updated-subscription-status-section",
@@ -37,7 +36,6 @@ export const DefaultFeatureFlagValue = {
   [FeatureFlag.FlexibleCollectionsV1]: FALSE,
   [FeatureFlag.VaultOnboarding]: FALSE,
   [FeatureFlag.GeneratorToolsModernization]: FALSE,
-  [FeatureFlag.FlexibleCollectionsMigration]: FALSE,
   [FeatureFlag.ShowPaymentMethodWarningBanners]: FALSE,
   [FeatureFlag.EnableConsolidatedBilling]: FALSE,
   [FeatureFlag.AC1795_UpdatedSubscriptionStatusSection]: FALSE,