Remove ATTRIBUTES and EXCERPT meta boxes when viewing the Homepage.

gistfile1.phtml

function myplugin_remove_homepage_metaboxes() {
	if ( isset( $_GET['post'] ) ) {
	        $post_id = $_GET['post'];
	} elseif ( isset( $_POST['post_ID'] ) ) {
	        $post_id = $_POST['post_ID'];
	}
  
	$front_page = get_option( 'page_on_front' );
  
	if ( ! isset( $post_id ) ) {
	        return;
	}
	elseif ( $post_id == $front_page ) { 
	        remove_meta_box( 'pageparentdiv', 'page', 'side' );
	        remove_meta_box( 'postexcerpt', 'page', 'normal' );
	}       
}
add_action( 'add_meta_boxes', 'myplugin_remove_homepage_metaboxes' );