refactor!: drop e-invoicing integration from erpnext (#26940)

erpnext/patches/v12_0/add_ewaybill_validity_field.py

@@ -1,16 +0,0 @@
-from __future__ import unicode_literals
-import frappe
-from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
-
-def execute():
-	company = frappe.get_all('Company', filters = {'country': 'India'})
-	if not company:
-		return
-
-	custom_fields = {
-		'Sales Invoice': [
-			dict(fieldname='eway_bill_validity', label='E-Way Bill Validity', fieldtype='Data', no_copy=1, print_hide=1,
-				depends_on='ewaybill', read_only=1, allow_on_submit=1, insert_after='ewaybill')
-		]
-	}
-	create_custom_fields(custom_fields, update=True)