Keep a single instant_search feature (#42710)

* Keep a single instant_search feature

* changelog

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/14105312501

Upstream-Ref: Automattic/jetpack@4abc625

Author: lovemeblender

CHANGELOG.md

@@ -79,6 +79,9 @@ This is an alpha version! The changes listed here are not final.
 - Use `Automattic/jetpack-composer-plugin` so jetpack-library packages will be installed in a place where `wp i18n` will see them.
 - woa: Enable wordads module via WP_CLI post transfer
 
+### Deprecated
+- Removed an extra instant search feature which included the business/commerce sites and we won't be using it for now.
+
 ### Removed
 - Removed the `Personalize Link in Bio` launchpad task, since the link in bio related flow is now deprecated
 - Remove the launch bar from the frontend of Atomic sites

wpcom-features/class-wpcom-features.php

@@ -380,7 +380,6 @@ class WPCOM_Features {
 	public const INSTALL_THEMES                    = 'install-themes';
 	public const INSTALL_WOO_ONBOARDING_PLUGINS    = 'install-woo-onboarding-plugins';
 	public const INSTANT_SEARCH                    = 'instant-search';
-	public const INSTANT_SEARCH_NO_BUSINESS        = 'instant-search-no-business'; // TEMP AND TO BE DELETED AFTER REBUILDING the jetpack-search index
 	public const JETPACK_DASHBOARD                 = 'jetpack-dashboard';
 	public const LEGACY_CONTACT                    = 'legacy-contact';
 	public const LIST_INSTALLED_PLUGINS            = 'list-installed-plugins';
@@ -774,16 +773,6 @@ class WPCOM_Features {
 			self::WPCOM_ECOMMERCE_TRIAL_PLANS,
 		),
 		self::INSTANT_SEARCH                    => array(
-			self::WPCOM_BUSINESS_PLANS,
-			self::WPCOM_ECOMMERCE_PLANS,
-			self::WPCOM_ECOMMERCE_TRIAL_PLANS,
-			self::WPCOM_SEARCH,
-			self::WPCOM_SEARCH_MONTHLY,
-			self::WP_P2_PLUS_MONTHLY,
-			self::JETPACK_SEARCH_PLANS,
-			self::JETPACK_COMPLETE_PLANS,
-		),
-		self::INSTANT_SEARCH_NO_BUSINESS        => array(
 			self::WPCOM_SEARCH,
 			self::WPCOM_SEARCH_MONTHLY,
 			self::WP_P2_PLUS_MONTHLY,