Remove layouts

// Unregister content/sidebar layout setting.
genesis_unregister_layout( 'content-sidebar' );

// Unregister sidebar/content layout setting.
genesis_unregister_layout( 'sidebar-content' );

// Unregister content/sidebar/sidebar layout setting.
genesis_unregister_layout( 'content-sidebar-sidebar' );

// Unregister sidebar/sidebar/content layout setting.
genesis_unregister_layout( 'sidebar-sidebar-content' );

// Unregister sidebar/content/sidebar layout setting.
genesis_unregister_layout( 'sidebar-content-sidebar' );

// Unregister full-width content layout setting.
genesis_unregister_layout( 'full-width-content' );