CrOS Settings: Fix Search icon for when revamp is disabled

Search row should not have an icon when revamp is disabled.

New search: https://screenshot.googleplex.com/BxVPdFGeatozDjq

Bug: b/322356350
Test: Manually test the UI.
Change-Id: Id1a48eb9fb30c474ec0b39320a47a8bcc24f9fc9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5245907
Reviewed-by: Wes Okuhara <wesokuhara@google.com>
Commit-Queue: Nikki Moteva <moteva@google.com>
Cr-Commit-Position: refs/heads/main@{#1253557}
diff --git a/chrome/browser/resources/ash/settings/os_search_page/search_and_assistant_settings_card.ts b/chrome/browser/resources/ash/settings/os_search_page/search_and_assistant_settings_card.ts
index a14f5a6..48239e5a 100644
--- a/chrome/browser/resources/ash/settings/os_search_page/search_and_assistant_settings_card.ts
+++ b/chrome/browser/resources/ash/settings/os_search_page/search_and_assistant_settings_card.ts
@@ -89,7 +89,7 @@
           }
 
           return {
-            searchEngine: 'os-settings:google-drive',
+            searchEngine: '',
             assistant: '',
             contentRecommendations: '',
           };