WordPress后台登录后第一时间会显示仪表盘内容，为了加快加载速度及隐藏多余的内容，我们会尝试删除“仪表盘”中的指定模块。

代码如下，可以按照自己的需要进行设置：

function remove_dashboard_widgets()
{
    remove_meta_box('dashboard_right_now', 'dashboard', 'normal');// Right Now
    remove_meta_box('dashboard_recent_comments', 'dashboard', 'normal');// Recent Comments
    remove_meta_box('dashboard_incoming_links', 'dashboard', 'normal');// Incoming Links
    remove_meta_box('dashboard_plugins', 'dashboard', 'normal');// Plugins
    remove_meta_box('dashboard_quick_press', 'dashboard', 'side');// Quick Press
    remove_meta_box('dashboard_recent_drafts', 'dashboard', 'side');// Recent Drafts
    remove_meta_box('dashboard_primary', 'dashboard', 'side');// WordPress blog
    remove_meta_box('dashboard_secondary', 'dashboard', 'side');// Other WordPress News
    remove_meta_box('dashboard_activity', 'dashboard', 'side');
    remove_meta_box('dashboard_site_health', 'dashboard', 'normal');// remove site health status

    remove_action('welcome_panel', 'wp_welcome_panel');// remove welcome panel

    global $wp_meta_boxes;
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_activity']);
}
add_action('wp_dashboard_setup', 'remove_dashboard_widgets');