remove unused argument

archivebox/index/html.py

@@ -52,10 +52,9 @@ def parse_html_main_index(out_dir: Path=OUTPUT_DIR) -> Iterator[str]:
 
 def generate_index_from_links(links: List[Link], with_headers: bool):
     if with_headers:
-        output = main_index_template(links, True)
+        output = main_index_template(links)
     else:
-        output = main_index_template(links, True, MINIMAL_INDEX_TEMPLATE)
-    return output
+        output = main_index_template(links, template=MINIMAL_INDEX_TEMPLATE)
 
 @enforce_types
 def main_index_template(links: List[Link], template: str=MAIN_INDEX_TEMPLATE) -> str: