fix: remove duplicate mistral adapter creation (#1787)

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cognee/infrastructure/llm/structured_output_framework/litellm_instructor/llm/get_llm_client.py

@@ -162,20 +162,5 @@ def get_llm_client(raise_api_key_error: bool = True):
             endpoint=llm_config.llm_endpoint,
         )
 
-    elif provider == LLMProvider.MISTRAL:
-        if llm_config.llm_api_key is None:
-            raise LLMAPIKeyNotSetError()
-
-        from cognee.infrastructure.llm.structured_output_framework.litellm_instructor.llm.mistral.adapter import (
-            MistralAdapter,
-        )
-
-        return MistralAdapter(
-            api_key=llm_config.llm_api_key,
-            model=llm_config.llm_model,
-            max_completion_tokens=max_completion_tokens,
-            endpoint=llm_config.llm_endpoint,
-        )
-
     else:
         raise UnsupportedLLMProviderError(provider)