Update hackaprompt/completers.py

hackaprompt/completers.py

@@ -77,7 +77,7 @@ class GPTCompletor(TextCompletion):
 
 
 class ChatGPTCompletor(TextCompletion):
-    def __init__(self, openai_api_key, model):
+    def __init__(self, model):
         self.openai_api_key = os.getenv("OPENAI_API_KEY")
         self.model = model