Revert "MSD: Launch the opt-in period for existing users"

This reverts commit e52d441.

Author: fushar

client/state/dashboard/selectors/is-dashboard-enabled.ts

@@ -2,7 +2,8 @@ import { isEnabled } from '@automattic/calypso-config';
 import { getCurrentUser } from 'calypso/state/current-user/selectors';
 import type { AppState } from 'calypso/types';
 
-export const OLDEST_ELIGIBLE_USER = 275231967; // Cut-off on 22 December 2025
+// TODO: Update user ID when feature is rolled out to a limited audience.
+export const OLDEST_ELIGIBLE_USER = 275022156;
 
 export const isDashboardEnabled = ( state: AppState ): boolean => {
 	if ( ! isEnabled( 'dashboard/v2' ) ) {

config/production.json

@@ -39,7 +39,6 @@
 		"cookie-banner": true,
 		"current-site/domain-warning": false,
 		"current-site/notice": true,
-		"dashboard/v2": true,
 		"dashboard/v2/backport/site-overview": true,
 		"domain-search-rewrite": true,
 		"domain-transfer-redesign": true,