Privacy: Remove the setting to enable comment cookies consent added in [43469].

This needs some more work to ensure expected behaviour.

See #44373.

git-svn-id: https://develop.svn.wordpress.org/trunk@43525 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/schema.php

@@ -535,9 +535,6 @@ function populate_options() {
 
 		// 4.9.6
 		'wp_page_for_privacy_policy'      => 0,
-
-		// 4.9.8
-		'show_comments_cookies_opt_in'    => 0,
 	);
 
 	// 3.3