[CI] Remove deprecated test/srt legacy CI setup (#28810)

test/README.md

@@ -14,7 +14,6 @@ The CI pipeline runs in three sequential stages: **A** (pre-flight, ~3 min) →
 - `registered/`: CI test files, auto-discovered by `run_suite.py`. Most tests live here. JIT kernel tests are an exception (see below).
 - `manual/`: Non-CI tests for local debugging or special setups.
 - `run_suite.py`: CI runner — scans `registered/` and JIT kernel directories.
-- `srt/`: Legacy CI setup, to be deprecated.
 
 The system supports both [unittest](https://docs.python.org/3/library/unittest.html) and [pytest](https://docs.pytest.org/en/stable/). The launcher runs `python filename.py -f` with **failfast enabled by default**.
 
@@ -112,4 +111,4 @@ This README mostly describes the NVIDIA GPU CI pipeline. Other hardware backends
 
 ### Adding New Models to Nightly CI
 - **Text models**: Extend the [global model list variables](https://github.com/sgl-project/sglang/blob/85c1f7937781199203b38bb46325a2840f353a04/python/sglang/test/test_utils.py#L104) in `test_utils.py`.
-- **VLMs**: Extend the `MODEL_THRESHOLDS` dictionary in `test/srt/nightly/test_vlms_mmmu_eval.py`.
+- **VLMs**: Extend the `MODEL_THRESHOLDS` dictionary in `test/registered/eval/test_vlms_mmmu_eval.py`.