Manage conflict with the new "View Archive" link

WordPress adds its own link into the admin bar to go to the archive page
of any post types. But its behaviour does not work correctly with
Thistle because of the possibility to have a post type without
single view (`publicly_queryable => false`).
So the Thistle link is kept in favour of the WP one.

includes/admin.php

@@ -338,3 +338,21 @@ function thistle_redirect_wp_logout( $logout_url, $redirect ) {
     }
 }
 add_filter( 'logout_url', 'thistle_redirect_wp_logout', 10, 2 );
+
+if ( ! function_exists( 'thistle_remove_admin_bar_archive_node' ) ) {
+    /**
+     * Removes the default archive links ("View Posts") from the admin bar in
+     * favour of the Thistle one. This choice lets us have
+     * this helpful link even if the post type has not a single view.
+     *
+     * @link https://core.trac.wordpress.org/ticket/34113
+     *
+     * @global WP_Admin_Bar $wp_admin_bar
+     */
+    function thistle_remove_admin_bar_archive_node() {
+        global $wp_admin_bar;
+
+        $wp_admin_bar->remove_menu( 'archive' );
+    }
+}
+add_action( 'wp_before_admin_bar_render', 'thistle_remove_admin_bar_archive_node' );