Materbar: Remove the Next Steps link from master bar (#9311)

Firest removed in Calypso in Automattic/wp-calypso#23952
Then removed on .com in D11711-code

This PR brings things in line.

To test:
load jetpack with the mastebar
Notive that the section Next Steps is gone.

modules/masterbar/masterbar.php

@@ -509,17 +509,7 @@ public function add_me_submenu( $wp_admin_bar ) {
 				'class' => 'mb-icon user-info-item',
 			),
 		) );
-
-		$wp_admin_bar->add_menu( array(
-			'parent' => $id,
-			'id'     => 'next-steps',
-			'title'  => esc_html__( 'Next Steps', 'jetpack' ),
-			'href'   => 'https://wordpress.com/me/next',
-			'meta'   => array(
-				'class' => 'mb-icon user-info-item',
-			),
-		) );
-
+
 		$help_link = 'https://jetpack.com/support/';
 
 		if ( jetpack_is_atomic_site() ) {