WP_Customize_Manager::remove_panel( string $id )

	public function remove_panel( $id ) {
		// Removing core components this way is _doing_it_wrong().
		if ( in_array( $id, $this->components, true ) ) {
			/* translators: 1: panel id, 2: link to 'customize_loaded_components' filter reference */
			$message = sprintf( __( 'Removing %1$s manually will cause PHP warnings. Use the %2$s filter instead.' ),
				$id,
				'<a href="' . esc_url( 'https://developer.wordpress.org/reference/hooks/customize_loaded_components/' ) . '"><code>customize_loaded_components</code></a>'
			);

			_doing_it_wrong( __METHOD__, $message, 'WP-4.5.0' );
		}
		unset( $this->panels[ $id ] );
	}