removed response type checking

app.py

@@ -22,7 +22,7 @@ def hello_world():
 
 
 @app.post("/rerank")
-def rerank(request: RerankRequest) -> RerankResponse:
+def rerank(request: RerankRequest):
     hits = request.hits
     sorted_hits = sorted(hits, key=lambda x: x[0]) # sort hits again for safety