Revert "Showing multiple domain selection on new-hosted-site flow (#103359)"

This reverts commit f3820b0.

Author: paulopmt1

client/signup/steps/domains/utils.js

@@ -1,4 +1,4 @@
-import { EXAMPLE_FLOW, NEW_HOSTED_SITE_FLOW } from '@automattic/onboarding';
+import { EXAMPLE_FLOW } from '@automattic/onboarding';
 import validUrl from 'valid-url';
 
 // Only override the back button from an external URL source on the below step(s) which is typically where we'd send them to as the 'entry'.
@@ -34,7 +34,7 @@ export function getExternalBackUrl( source, sectionName = null ) {
  * Check if we should use multiple domains in domain flows.
  */
 export function shouldUseMultipleDomainsInCart( flowName ) {
-	const enabledFlows = [ 'domain', 'onboarding', EXAMPLE_FLOW, NEW_HOSTED_SITE_FLOW ];
+	const enabledFlows = [ 'domain', 'onboarding', EXAMPLE_FLOW ];
 
 	return enabledFlows.includes( flowName );
 }