[Misc] Fix spec decode example (#20296)

Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>

examples/offline_inference/spec_decode.py

@@ -79,9 +79,7 @@ def main():
         trust_remote_code=True,
         tensor_parallel_size=args.tp,
         enable_chunked_prefill=args.enable_chunked_prefill,
-        max_num_batched_tokens=args.max_num_batched_tokens,
         enforce_eager=args.enforce_eager,
-        max_num_seqs=args.max_num_seqs,
         gpu_memory_utilization=0.8,
         speculative_config=speculative_config,
         disable_log_stats=False,