Cherry-pick sonic-net#21088
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### Description of PR
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Summary:
This PR is to cancel PFCWD action override at ingress on Th5 platform.
The change is required as PFCWD will work on S/W mode (ACL solution) on
Th5 as a workaround for a known issue.

### Type of change

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- Fill x for your type of change.
- e.g.
- [x] Bug fix
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- [ ] Bug fix
- [ ] Testbed and Framework(new/improvement)
- [ ] New Test case
    - [ ] Skipped for non-supported platforms
- [x] Test case improvement


### Back port request
- [ ] 202205
- [ ] 202305
- [ ] 202311
- [ ] 202405
- [ ] 202411
- [ ] 202505

### Approach
#### What is the motivation for this PR?
This PR is to cancel PFCWD action override at ingress on Th5 platform.

#### How did you do it?
Remove the code for overriding PFCWD action in
`tests/pfcwd/test_pfcwd_function.py`

#### How did you verify/test it?
The change is verified on a physical testbed.
```
collected 5 items                                                                                                                                                                                                             

pfcwd/test_pfcwd_function.py::TestPfcwdFunc::test_pfcwd_actions[] 
PASSED                                                                                                                                                                                                                  [ 20%]
pfcwd/test_pfcwd_function.py::TestPfcwdFunc::test_pfcwd_multi_port[] 
PASSED                                                                                                                                                                                                                  [ 40%]
pfcwd/test_pfcwd_function.py::TestPfcwdFunc::test_pfcwd_mmu_change[] 
...
```
#### Any platform specific information?
Th5 platform specific change.

#### Supported testbed topology if it's a new test case?
Not a new test.

### Documentation
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(If it's a new feature, new test case)
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…ules (sonic-net#2569)

PR#2538 cannot merge due to master branch status. It has been tested
against 201811 branch.

Submodule src/sonic-sairedis 21f4a49..d57222a:
  > Add more specific logic for ingress ACL and buffer profile (sonic-net#421)
  > Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE (sonic-net#418)
  > Add support for vlan tagged frames in virtual switch (sonic-net#417)

Submodule src/sonic-swss 1590030..584490c:
  > Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE (sonic-net#786)
  > [vstest]: Potential fix for timing issue in warm_reboot's routing UT (sonic-net#788)

Submodule src/sonic-swss-common 594f4e8..286ef34:
  > Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE (sonic-net#260)

Submodule src/sonic-utilities c6666e2..b44b462:
  > Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABL… (sonic-net#458)
  > [aclshow] output only counters per table/rule (sonic-net#442)

Signed-off-by: Ying Xie <ying.xie@microsoft.com>

[PR 2538] Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE

Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>