去除transformers库定向下载

backend/requirements.txt

@@ -14,7 +14,7 @@ websockets>=12.0
 #   沐曦 GPU:    pip install torch_musa --index-url https://release.mthreads.com/repo/pypi/simple
 # 以下为框架和工具库依赖
 # transformers>=4.45.0
-transformers @ git+https://github.com/huggingface/transformers.git
+transformers
 peft>=0.13.0
 trl>=0.12.0
 datasets>=3.0.0