How to Hide Video Slider Rich Admin Menus

function plt_hide_slider_video_menus() {
	//Hide "Video Slider".
	remove_menu_page('Rich-Web Video Slider Admin?Rich_Web_VSlider_Nonce=9fcd838355');
	//Hide "Video Slider → Slider Manager".
	remove_submenu_page('Rich-Web Video Slider Admin?Rich_Web_VSlider_Nonce=9fcd838355', 'Rich-Web Video Slider Admin?Rich_Web_VSlider_Nonce=9fcd838355');
	//Hide "Video Slider → Slider Options".
	remove_submenu_page('Rich-Web Video Slider Admin?Rich_Web_VSlider_Nonce=9fcd838355', 'Rich-Web Video Slider General?Rich_Web_VSlider_Nonce=9fcd838355');
	//Hide "Video Slider → Our Products".
	remove_submenu_page('Rich-Web Video Slider Admin?Rich_Web_VSlider_Nonce=9fcd838355', 'Rich-Web Video Slider Products');
}

add_action('admin_menu', 'plt_hide_slider_video_menus', 11);

Where do I put this code?