[UT] fix skip ut test for test_utils (#3803)

### What this PR does / why we need it?
[UT] fix ut test for test_utils that
https://github.com/vllm-project/vllm-ascend/pull/3612 skipped.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
vLLM version: v0.11.0rc3
vLLM main:
17c540a993

- vLLM version: v0.11.0rc3
- vLLM main:
83f478bb19

---------

Signed-off-by: Meihan-chen <jcccx.cmh@gmail.com>

.github/workflows/vllm_ascend_test.yaml

@@ -120,9 +120,7 @@ jobs:
           export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/Ascend/ascend-toolkit/latest/x86_64-linux/devlib
           pytest -sv --cov --cov-report=xml:unittests-coverage.xml tests/ut \
             --ignore tests/ut/torchair/models/test_torchair_deepseek_mtp.py \
-            --ignore tests/ut/torchair/models/test_torchair_deepseek_v2.py \
-            --ignore tests/ut/test_utils.py \
-            --ignore tests/ut/test_platform.py
+            --ignore tests/ut/torchair/models/test_torchair_deepseek_v2.py
 
       - name: Upload coverage to Codecov
         # only upload coverage when commits merged