How to Hide CM Custom Reports Admin Menus

function plt_hide_cm_custom_reports_menus() {
	//Hide "CM Custom Reports".
	remove_menu_page('cm-custom-reports');
	//Hide "CM Custom Reports → Reports".
	remove_submenu_page('cm-custom-reports', 'cm-custom-reports');
	//Hide "CM Custom Reports → Schedules".
	remove_submenu_page('cm-custom-reports', 'cm-custom-reports-schedules');
	//Hide "CM Custom Reports → Email Templates".
	remove_submenu_page('cm-custom-reports', 'cm-custom-reports-templates');
	//Hide "CM Custom Reports → Settings".
	remove_submenu_page('cm-custom-reports', 'cm-custom-reports-settings');
	//Hide "CM Custom Reports →".
	remove_submenu_page('cm-custom-reports', '#');
	//Hide "CM Custom Reports → Upgradeāž¤".
	remove_submenu_page('cm-custom-reports', 'cmcr_pro');
	//Hide "CM Custom Reports → User Guide".
	remove_submenu_page('cm-custom-reports', 'cmcr_about');
	//Hide "CM Custom Reports → Related Plugins".
	remove_submenu_page('cm-custom-reports', 'cmcr_addons');
}

add_action('admin_menu', 'plt_hide_cm_custom_reports_menus', 22);

Where do I put this code?