Remove openai import and return type annotation

neon_llm_core/llm.py

@@ -28,7 +28,6 @@
 from typing import List, Optional, Tuple, Union
 
 from neon_data_models.models.api import LLMRequest, LLMResponse
-from openai import OpenAI
 from ovos_utils.log import log_deprecation
 
 
@@ -69,7 +68,7 @@ def tokenizer_model_name(self) -> str:
 
     @property
     @abstractmethod
-    def model(self) -> OpenAI:
+    def model(self) -> object:
         """
         Get an OpenAI client object to send requests to.
         """