Last month, Google introduced a new and improved sitelinks search box within search results that made it easier for users to access content on the website directly through site-search page. It has now announced that the feature can be disabled completely by the Webmaster, following Google’s latest move.
If a user performs Google search, the search engine provides an additional box under the first YouTube result, giving user the ability to search within the youtube.com domain. This is referred to as a site command search. More control is vested with the developers regarding how the search works and whether it comes within the internal site search pages or not. The search feature can now be disabled in site links through the new meta tag nositelinkssearchbox :
Webmasters can now add the tag to the site and communicate to Google that the site link search box must not be displayed when the site comes in search results. As part of the usual Googlebot crawling and page processing which may last for a few weeks, the sitelinks search box will undergo disabling.Google Releases New Meta Tag to Disable the Sitelinks Search Box!,