test: remove hosted_vllm from OpenAI client tests (#20163)

hosted_vllm no longer uses the OpenAI client, so these tests
that mock the OpenAI client are not applicable to hosted_vllm.

Removes hosted_vllm from:
- test_openai_compatible_custom_api_base
- test_openai_compatible_custom_api_video

tests/local_testing/test_completion.py

@@ -1373,8 +1373,8 @@ HF Tests we should pass
 
 
 @pytest.mark.parametrize(
-    "provider", ["openai", "hosted_vllm", "lm_studio", "llamafile"]
-)  # "vertex_ai",
+    "provider", ["openai", "lm_studio", "llamafile"]
+)  # "vertex_ai", hosted_vllm removed - no longer uses OpenAI client
 @pytest.mark.asyncio
 async def test_openai_compatible_custom_api_base(provider):
     litellm.set_verbose = True
@@ -1414,10 +1414,9 @@ async def test_openai_compatible_custom_api_base(provider):
     "provider",
     [
         "openai",
-        "hosted_vllm",
         "llamafile",
     ],
-)  # "vertex_ai",
+)  # "vertex_ai", hosted_vllm removed - no longer uses OpenAI client
 @pytest.mark.asyncio
 async def test_openai_compatible_custom_api_video(provider):
     litellm.set_verbose = True