Wordpress: remove post write panel features

gistfile1

/* Remove page and post write panel features **********************************************************************
** http://wpmu.org/remove-page-and-post-write-panel-features/ *****************************************************
** http://wordpress.stackexchange.com/questions/2025/removing-metabox-for-slug-without-removing-functionality ** */
/* !관리자외 글쓰기 패널 삭제 *************************************************************************************** */
add_action('admin_init', 'my_custom_write_panel');
function my_custom_write_panel() {
	//if ( !current_user_can( 'delete_others_posts' ) ) { // if user is below Editor level
	//if ( !current_user_can( 'manage_options' ) ) { // if user is below Administrator level
		remove_post_type_support( 'post', 'excerpt' );
		remove_post_type_support( 'post', 'custom-fields' );
		remove_post_type_support( 'post', 'trackbacks' );
		//remove_post_type_support( 'post', 'author' );
		remove_post_type_support( 'post', 'thumbnail' );
		remove_post_type_support( 'post', 'revisions' );
		remove_meta_box('slugdiv', 'post', 'normal');
		remove_meta_box('formatdiv', 'post', 'normal');
		remove_meta_box('commentsdiv', 'post', 'normal');
		remove_meta_box('tagsdiv-post_tag', 'post', 'normal'); // to remove 'Tags' metabox
	//}
}