test: remove duplicate cases in perf sanity test (#5870)

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

Author: ruodil

tests/integration/test_lists/qa/trt_llm_release_perf_sanity_test.yml

@@ -203,7 +203,6 @@ trt_llm_release_perf_sanity_test:
   - perf/test_perf.py::test_perf[llama_v3.1_70b-bench-bfloat16-maxbs:1-input_output_len:200,2000-reqs:10-gpus:8]
   - perf/test_perf.py::test_perf[llama_v3.1_70b-bench-pytorch-bfloat16-maxbs:1-input_output_len:200,2000-reqs:10-gpus:8]
   - perf/test_perf.py::test_perf[gpt_20b-bench-float16-maxbs:1-input_output_len:128,128-reqs:10-gpus:8]
-  - perf/test_perf.py::test_perf[llama_v3.1_70b-bench-pytorch-bfloat16-maxbs:1-input_output_len:2000,200-reqs:10-gpus:8]
 
 
 # FP8 tests for systems with 8+ GPUs