chore: 删除冗余的兼容性检查判断

pkg/openai/manager.py

@@ -83,7 +83,7 @@ class OpenAIInteract:
             dict: 响应
         """
         config = pkg.utils.context.get_config()
-        params = config.image_api_params if hasattr(config, "image_api_params") else self.default_image_api_params
+        params = config.image_api_params
 
         response = openai.Image.create(
             prompt=prompt,

pkg/openai/session.py

@@ -213,7 +213,7 @@ class Session:
                 return None
 
         config = pkg.utils.context.get_config()
-        max_length = config.prompt_submit_length if hasattr(config, "prompt_submit_length") else 1024
+        max_length = config.prompt_submit_length
 
         prompts, counts = self.cut_out(text, max_length)