Update backend.py

backend.py

@@ -31,9 +31,7 @@ class CustomOpenAILLM(LLM):
         return "custom_openai"
 
 # Set environment variables
-os.environ["OPENAI_API_BASE"] = "https://openrouter.ai/api/v1"
-os.environ["OPENAI_MODEL_NAME"] = "microsoft/phi-3-medium-128k-instruct:free"  # Adjust based on available model
-os.environ["OPENAI_API_KEY"] = "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"  # Replace with your actual API key
+
 
 # Initialize the custom LLM
 custom_llm = CustomOpenAILLM()