fix: Add patch to remove chat related doctypes

frappe/patches.txt

@@ -175,6 +175,7 @@ execute:frappe.delete_doc_if_exists('Page', 'workspace')
 execute:frappe.delete_doc_if_exists('Page', 'dashboard', force=1)
 frappe.core.doctype.page.patches.drop_unused_pages
 execute:frappe.get_doc('Role', 'Guest').save() # remove desk access
+frappe.patches.v13_0.remove_chat
 frappe.patches.v13_0.rename_desk_page_to_workspace # 02.02.2021
 frappe.patches.v13_0.delete_package_publish_tool
 frappe.patches.v13_0.rename_list_view_setting_to_list_view_settings

frappe/patches/v13_0/remove_chat.py

@@ -0,0 +1,16 @@
+import frappe
+import click
+
+def execute():
+	frappe.delete_doc_if_exists("DocType", "Chat Message")
+	frappe.delete_doc_if_exists("DocType", "Chat Profile")
+	frappe.delete_doc_if_exists("DocType", "Chat Token")
+	frappe.delete_doc_if_exists("DocType", "Chat Room User")
+	frappe.delete_doc_if_exists("DocType", "Chat Room")
+	frappe.delete_doc_if_exists("Module Def", "Chat")
+
+	click.secho(
+		"Chat Module is moved to a separate app and is removed from Frappe in version-13.\n"
+		"Please install the app to continue using the chat feature: https://github.com/frappe/chat",
+		fg="yellow",
+	)