chore(groq test): skip with_n tests for groq, it is not supported server-side (#3346)

# What does this PR do?

skip the with_n test for groq, because it isn't supported by the
provider's service

see
https://console.groq.com/docs/openai#currently-unsupported-openai-features

Co-authored-by: raghotham <rsm@meta.com>

tests/integration/inference/test_openai_completion.py

@@ -64,6 +64,9 @@ def skip_if_doesnt_support_n(client_with_models, model_id):
     if provider.provider_type in (
         "remote::sambanova",
         "remote::ollama",
+        # https://console.groq.com/docs/openai#currently-unsupported-openai-features
+        # -> Error code: 400 - {'error': {'message': "'n' : number must be at most 1", 'type': 'invalid_request_error'}}
+        "remote::groq",
         # Error code: 400 - [{'error': {'code': 400, 'message': 'Only one candidate can be specified in the
         # current model', 'status': 'INVALID_ARGUMENT'}}]
         "remote::gemini",