Update main_endpoint.py (#739)

Fix #738

Author: clefourrier

src/lighteval/main_endpoint.py

@@ -283,9 +283,6 @@ def litellm(
     ],
     tasks: Annotated[str, Argument(help="Comma-separated list of tasks to evaluate on.")],
     # === Common parameters ===
-    use_chat_template: Annotated[
-        bool, Option(help="Use chat template for evaluation.", rich_help_panel=HELP_PANEL_NAME_4)
-    ] = False,
     system_prompt: Annotated[
         Optional[str], Option(help="Use system prompt for evaluation.", rich_help_panel=HELP_PANEL_NAME_4)
     ] = None,
@@ -373,7 +370,7 @@ def litellm(
         custom_tasks_directory=custom_tasks,
         num_fewshot_seeds=num_fewshot_seeds,
         max_samples=max_samples,
-        use_chat_template=use_chat_template,
+        use_chat_template=True,
         system_prompt=system_prompt,
         load_responses_from_details_date_id=load_responses_from_details_date_id,
     )