[https://nvbugs/5461796][fix] Unwaive test test_llmapi_speculative_decoding_mtp (#8832)

Signed-off-by: qgai <[email protected]>

Author: sunnyqgg

tests/integration/test_lists/waives.txt

@@ -263,7 +263,6 @@ triton_server/test_triton.py::test_gpt_ib_ptuning[gpt-ib-ptuning] SKIP (https://
 triton_server/test_triton.py::test_mistral_ib_mm[mistral-ib-mm] SKIP (https://nvbugs/5371343)
 triton_server/test_triton.py::test_t5_ib[t5-ib] SKIP (https://nvbugs/5456482)
 accuracy/test_llm_api_pytorch.py::TestQwen3_235B_A22B::test_nvfp4[latency_moe_trtllm_eagle3] SKIP (https://nvbugs/5437384)
-llmapi/test_llm_examples.py::test_llmapi_speculative_decoding_mtp SKIP (https://nvbugs/5461796)
 accuracy/test_llm_api.py::TestLlama3_1_8BInstruct::test_gather_generation_logits_cuda_graph SKIP (https://nvbugs/5365525)
 examples/test_phi.py::test_phi_fp8_with_bf16_lora[Phi-3-mini-128k-instruct] SKIP (https://nvbugs/5465143)
 examples/test_phi.py::test_phi_fp8_with_bf16_lora[Phi-3-small-128k-instruct] SKIP (https://nvbugs/5465143)