Add trust_remote_code parameter and remove True

- Introduced a new model parameter `trust_remote_code`
- Set the default value of `trust_remote_code` to `False`
  to enhance security

examples/inference/llava1_5.yaml

@@ -1,3 +1,4 @@
 model_name_or_path: llava-hf/llava-1.5-7b-hf
 template: llava
 infer_backend: huggingface  # choices: [huggingface, vllm]
+trust_remote_code: true