How to Hide Razorpay Subscription Button Admin Menus

function plt_hide_razorpay_subscription_button_menus() {
	//Hide the "Razorpay Subscription Buttons" menu.
	remove_menu_page('razorpay_Subscription_button');
	//Hide the "Razorpay Subscription Buttons → Razorpay Subscription Buttons" menu.
	remove_submenu_page('razorpay_Subscription_button', 'razorpay_Subscription_button');
	//Hide the "Razorpay Subscription Buttons → Settings" menu.
	remove_submenu_page('razorpay_Subscription_button', 'razorpay_subscription_settings');
}

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

Where do I put this code?