How to Hide Intelli Content - AI Writer (GPT 3.5 Turbo, GPT 4, Turbo, Preview) Admin Menus

function plt_hide_intelli_content_menus() {
	//Hide the "IntelliContent" menu.
	remove_menu_page('intelli-content-generation');
	//Hide the "IntelliContent → Content Generation" menu.
	remove_submenu_page('intelli-content-generation', 'intelli-content-generation');
	//Hide the "IntelliContent → Settings" menu.
	remove_submenu_page('intelli-content-generation', 'intelli-content-settings');
}

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

Where do I put this code?