Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
This policy controls whether Microsoft Bing trending suggestions appear in the address bar’s suggestion dropdown when users click the address bar while on a New Tab Page. If this policy is enabled or not configured, Microsoft Bing trending suggestions will appear in the address bar suggestion dropdown. If this policy is disabled, Microsoft Edge will not display Microsoft Bing trending suggestions when users click the address bar.