add_action( ‘customize_register’, ‘prefix_remove_css_section’, 15 );
function prefix_remove_css_section( $wp_customize ) {
$wp_customize->remove_section( ‘title_tagline’);
$wp_customize->remove_section( ‘colors’);
$wp_customize->remove_section( ‘header_image’);
$wp_customize->remove_section( ‘background_image’);
$wp_customize->remove_panel( ‘nav_menus’);
$wp_customize->remove_section( ‘static_front_page’); $wp_customize->remove_section( ‘custom_css’);
}