How to Hide AI Content Writer Admin Menus

function plt_hide_ai_content_writer_menus() {
	//Hide "AI Content Writer".
	remove_menu_page('ai-content-writer');
	//Hide "AI Content Writer → Dashboard".
	remove_submenu_page('ai-content-writer', 'ai-content-writer');
	//Hide "AI Content Writer → Campaigns".
	remove_submenu_page('ai-content-writer', 'aicw-campaigns');
	//Hide "AI Content Writer → Generate Content".
	remove_submenu_page('ai-content-writer', 'aicw-generate-content');
	//Hide "AI Content Writer → Settings".
	remove_submenu_page('ai-content-writer', 'aicw-settings');
	//Hide "AI Content Writer → Help".
	remove_submenu_page('ai-content-writer', 'aicw-help');
}

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

Where do I put this code?