fix a bug of PHYSICS benchmark

co-authored-by: black-yt  <xu_wanghan@sjtu.edu.cn>

Author: vaporhug

scieval/dataset/PHYSICS/PHYSICS.py

@@ -119,7 +119,7 @@ def build_prompt(self, line):
     Problem: {{prompt}}"""
 
         # 获取问题文本（支持 Series 或 dict）
-        prompt_text = line["question"] if isinstance(line, dict) else line
+        prompt_text = line["question"]
 
         # 应用指令模板
         prompt_text = Template(INSTRUCTION_TEMPLATE).render(prompt=prompt_text)