fix: remove unused imports in health_bench_annotator and health_bench_scenario

Author: chakravarthik27

src/helm/benchmark/annotation/health_bench_annotator.py

@@ -30,7 +30,6 @@
 from helm.benchmark.adaptation.request_state import RequestState
 from helm.clients.auto_client import AutoClient
 from helm.common.hierarchical_logger import hwarn, hlog
-from helm.common.request import Request
 
 PROMPT_TEMPLATE = """
 Your job is to look at a conversation and a rubric item, and score the last turn (i.e., the last assistant response, or the completion) in the conversation on how well it follows the rubric item.
@@ -387,7 +386,7 @@ def annotate(self, request_state: RequestState) -> Dict[str, Any]:
                 except Exception as e:
                     hlog(f"ERROR evaluating with LLM {annotator_name}: {e}")
                     failed_counts[annotator_name] += 1
-            ## merge annotation score with evaluation score
+            # merge annotation score with evaluation score
             if evaluate_score is not None:
                 score = (score + evaluate_score / 10) / 2
             overall_score[annotator_name] = {

src/helm/benchmark/scenarios/health_bench_scenario.py

@@ -25,7 +25,6 @@
 import json
 import os
 from typing import List
-import zipfile
 import requests
 
 from helm.benchmark.presentation.taxonomy_info import TaxonomyInfo