fix: remove duplicate doctype
diff --git a/erpnext/regional/india/setup.py b/erpnext/regional/india/setup.py
index 097c01f..34d5991 100644
--- a/erpnext/regional/india/setup.py
+++ b/erpnext/regional/india/setup.py
@@ -244,7 +244,6 @@
 		'Purchase Receipt Item': [hsn_sac_field],
 		'Purchase Invoice Item': [hsn_sac_field],
 		'Material Request Item': [hsn_sac_field],
-		'Purchase Order Item': [hsn_sac_field],
 		'Employee': [
 			dict(fieldname='ifsc_code', label='IFSC Code',
 				fieldtype='Data', insert_after='bank_ac_no', print_hide=1,