revert: BU Schlüssel (a21f76f)
diff --git a/erpnext/regional/report/datev/datev.py b/erpnext/regional/report/datev/datev.py
index beac7ed..92a10c2 100644
--- a/erpnext/regional/report/datev/datev.py
+++ b/erpnext/regional/report/datev/datev.py
@@ -343,8 +343,7 @@
/* against number or, if empty, party against number */
%(temporary_against_account_number)s as 'Gegenkonto (ohne BU-Schlüssel)',
- /* disable automatic VAT deduction */
- '40' as 'BU-Schlüssel',
+ '' as 'BU-Schlüssel',
gl.posting_date as 'Belegdatum',
gl.voucher_no as 'Belegfeld 1',