Disable The “Page Header” For Portfolio Items

// Disable The "Page Header" For Portfolio Items
function my_disable_portfolio_page_header( $return ) {
	if ( is_singular( 'portfolio' ) ) {
		return false;
	}
	return $return;
}
add_filter( 'wpex_display_page_header', 'my_disable_portfolio_page_header', 20 );