[V0 deprecation] Guided decoding (#21347)

Signed-off-by: Reza Barazesh <rezabarazesh@meta.com>
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Co-authored-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

tests/v1/test_oracle.py

@@ -47,13 +47,6 @@ def test_unsupported_configs(monkeypatch):
                 },
             ).create_engine_config()
 
-        with pytest.raises(NotImplementedError):
-            AsyncEngineArgs(
-                model=MODEL,
-                guided_decoding_backend="lm-format-enforcer",
-                guided_decoding_disable_fallback=True,
-            ).create_engine_config()
-
         with pytest.raises(NotImplementedError):
             AsyncEngineArgs(
                 model=MODEL,