Remove todo

Remove todo, since it was handled in c86f5ad.

Also add confirmation around require-login

public_html/wp-content/mu-plugins/camptix-tweaks/camptix-tweaks.php

@@ -534,12 +534,8 @@ function load_addons( $addons ) {
 		[]
 	);
 
+	// Enable for all WordCamp sites, apart from those being skipped above.
 	if ( ! in_array( get_current_blog_id(), $skip_require_login, true ) ) {
-		/*
-		 * todo -- NOTE: when this is opened up for all camps, it will have to be enabled ONLY on WCSF14 and sites
-		 * that haven't opened tickets yet. Otherwise CampTix_Requre_login::hide_unconfirmed_attendees()
-		 * will break pre-existing [attendee] pages.
-		 */
 		$addons['require-login'] = $camptix->get_default_addon_path( 'require-login.php' );
 	}