Code cleanup

template_helper.py

@@ -17,20 +17,3 @@ def render(templates: Jinja2Templates, template_name: str,
     response = templates.TemplateResponse(template_name, ctx)
     response.status_code = status_code
     return response
-
-def render_xml(templates: Jinja2Templates, template_name: str,
-               request: Request, invoice: "Invoice",
-               filename: str = "factur-x.xml") -> Response:
-
-    xml_content = templates.env.get_template(template_name).render(
-        request=request,
-        invoice=invoice,
-        seller=invoice.seller,
-        buyer=invoice.buyer,
-    )
-
-    return Response(
-        content=xml_content,
-        media_type="application/xml",
-        headers={"Content-Disposition": f'attachment; filename="{filename}"'}
-    )