[FOLLOWUP] Use base test to avoid patch everwhere (#1634)

### What this PR does / why we need it?
Use base test to avoid patch everwhere.

Followup here: https://github.com/vllm-project/vllm-ascend/pull/1566

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
ut ci passed

- vLLM version: v0.9.2
- vLLM main:
8d0a01a5f2

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

tests/ut/quantization/test_func_wrapper.py

@@ -1,8 +1,8 @@
-import unittest
 from unittest.mock import patch
 
 import torch
 
+from tests.ut.base import TestBase
 from vllm_ascend.quantization.func_wrapper import (wrapper_rmsnorm_forward_oot,
                                                    wrapper_rmsnorm_init)
 
@@ -20,7 +20,7 @@ class MockRMSNorm:
         self.ignore_anti = extra_args.get('ignore_anti', True)
 
 
-class TestFuncWrapper(unittest.TestCase):
+class TestFuncWrapper(TestBase):
 
     def test_wrapper_rmsnorm_init(self):