fix: remove newsletter related code

erpnext/public/js/erpnext-web.bundle.js

@@ -1 +0,0 @@
-import "./website_utils";

erpnext/public/js/website_utils.js

@@ -1,14 +0,0 @@
-// Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
-// License: GNU General Public License v3. See license.txt
-
-if (!window.erpnext) window.erpnext = {};
-
-erpnext.subscribe_to_newsletter = function (opts, btn) {
-	return frappe.call({
-		type: "POST",
-		method: "frappe.email.doctype.newsletter.newsletter.subscribe",
-		btn: btn,
-		args: { email: opts.email },
-		callback: opts.callback,
-	});
-};