chore(custom-fields): remove dead 'Setting up VAT calculation hooks' print

The last line of create_custom_fields() was a print() with no code under it —
a leftover heading for setup that was never written. It only produced a
misleading line in the migrate log; VAT calculation is actually wired up by
patch_sales_documents(), an unrelated function.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

jey_erp/custom_fields.py

@@ -2119,5 +2119,4 @@ def create_custom_fields():
     frappe.clear_cache(doctype="Salary Slip")
 
     # Коммит всех изменений
-    frappe.db.commit()
-    print("Setting up VAT calculation hooks...")
+    frappe.db.commit()