[https://nvbugs/6309375][test] AutoDeploy: Remove stale fallback test (#15316)

Signed-off-by: Govind Ramnarayan <105831528+govind-ramnarayan@users.noreply.github.com>

Author: govind-ramnarayan

tests/integration/test_lists/waives.txt

@@ -358,7 +358,6 @@ unittest/_torch/thop/serial/test_moe.py::TestMoeFp4::test_no_autotune[use_score_
 unittest/_torch/thop/serial/test_moe.py::TestMoeFp4::test_no_autotune[use_score_as_input-RoutingRenormalize_qwen_next-swiglu-1024-1024-150] SKIP (https://nvbugs/5908070)
 unittest/_torch/thop/serial/test_moe.py::TestMoeFp4::test_no_autotune[use_score_as_input-RoutingRenormalize_topk_4-swiglu-1024-1024-150] SKIP (https://nvbugs/5908070)
 unittest/_torch/visual_gen/test_flux_pipeline.py::TestFluxCombinedOptimizations::test_all_optimizations_combined SKIP (https://nvbugs/6199854)
-unittest/auto_deploy/singlegpu/shim/test_llm_config.py::test_speculative_flashinfer_fallback_disables_piecewise SKIP (https://nvbugs/6309375)
 unittest/auto_deploy/singlegpu/smoke SKIP (https://nvbugs/6306936)
 unittest/auto_deploy/singlegpu/smoke/test_disagg.py::test_autodeploy_disaggregated_batch_smoke[deepseek-trtllm-simple] SKIP (https://nvbugs/6307525)
 unittest/auto_deploy/singlegpu/smoke/test_disagg.py::test_autodeploy_disaggregated_batch_smoke[llama-flashinfer-cudagraph] SKIP (https://nvbugs/6307525)

tests/unittest/auto_deploy/singlegpu/shim/test_llm_config.py

@@ -95,25 +95,6 @@ def test_yaml_compile_backend_disables_default_piecewise(tmp_path):
     assert args.transforms["compile_model"]["piecewise_enabled"] is False
 
 
-def test_speculative_flashinfer_fallback_disables_piecewise():
-    from tensorrt_llm.llmapi import EagleDecodingConfig
-
-    spec_config = EagleDecodingConfig(
-        max_draft_len=3,
-        speculative_model="some/model",
-        eagle3_one_model=True,
-    )
-
-    args = LlmArgs(
-        model="test-model",
-        attn_backend="flashinfer",
-        speculative_config=spec_config,
-    )
-
-    assert args.compile_backend == "torch-simple"
-    assert args.transforms["compile_model"]["piecewise_enabled"] is False
-
-
 def test_cache_transceiver_rejects_unmanaged_persistent_caches():
     """Cache transceiver rejects unmanaged persistent cache resources."""
     args = LlmArgs(