How to Hide Survey Maker Admin Menus

function plt_hide_survey_maker_menus() {
	//Hide "Survey Maker".
	remove_menu_page('survey-maker');
	//Hide "Survey Maker → Surveys".
	remove_submenu_page('survey-maker', 'survey-maker');
	//Hide "Survey Maker → Survey Categories".
	remove_submenu_page('survey-maker', 'survey-maker-survey-categories');
	//Hide "Survey Maker → Frontend Requests".
	remove_submenu_page('survey-maker', 'survey-maker-requests');
	//Hide "Survey Maker → Popup Survey".
	remove_submenu_page('survey-maker', 'survey-maker-popup-surveys');
	//Hide "Survey Maker → Submissions".
	remove_submenu_page('survey-maker', 'survey-maker-submissions');
	//Hide "Survey Maker → Export / Import".
	remove_submenu_page('survey-maker', 'survey-maker-export-import');
	//Hide "Survey Maker → General Settings".
	remove_submenu_page('survey-maker', 'survey-maker-settings');
	//Hide "Survey Maker → How to use".
	remove_submenu_page('survey-maker', 'survey-maker-dashboard');
	//Hide "Survey Maker → Our products".
	remove_submenu_page('survey-maker', 'survey-maker-our-products');
	//Hide "Survey Maker → PRO Features".
	remove_submenu_page('survey-maker', 'survey-maker-survey-features');
}

add_action('admin_menu', 'plt_hide_survey_maker_menus', 146);

Where do I put this code?