[V0 Deprecation] Remove LLMEngine (#25033)

Signed-off-by: Woosuk Kwon <woosuk@thinkingmachines.ai>
Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>

tests/entrypoints/llm/test_prompt_validation.py

@@ -6,14 +6,6 @@ import pytest
 from vllm import LLM
 
 
-@pytest.fixture(autouse=True)
-def v1(run_with_both_engines):
-    # Simple autouse wrapper to run both engines for each test
-    # This can be promoted up to conftest.py to run for every
-    # test in a package
-    pass
-
-
 def test_empty_prompt():
     llm = LLM(model="openai-community/gpt2", enforce_eager=True)
     with pytest.raises(ValueError, match='decoder prompt cannot be empty'):