Revert "Add IPv6 TC to queue mapping test #10941" from master

[vivekverma-arista]

Description of PR

Summary:
Fixes #126

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 201911
• 202012
• 202205
• 202305
• 202311

Approach

What is the motivation for this PR?

The new test is a poorly written IPV6 variant of testQosSaiDscpQueueMapping. It is expected to fail across all platforms/topolgies because qos/test_qos_sai.py cannot support IPV6 variant of any of it's testcase because IPV6 is disabled on the DUT by qos_sai_base.py: https://github.com/sonic-net/sonic-mgmt/blob/master/tests/qos/qos_sai_base.py#L1811-L1826 Also the changes made for this test touch class scoped fixtures which causes all the other testcases to error out as well.

How did you do it?

Revert #10941 as well as the following fixes that were made to get around the issue

1. Fix qos/test_qos_sai.py #12334
2. Skip IPV6 variant of testQosSaiDscpQueueMapping if IPV6 is not config… #12834

How did you verify/test it?

Verfied on T0 and T1, #126 was not seen.

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

The pre-commit check detected issues in the files touched by this pull request.
The pre-commit check is a mandatory check, please fix detected issues.

Detailed pre-commit check results:
trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
check for added large files..............................................Passed
check python ast.........................................................Passed
flake8...................................................................Failed
- hook id: flake8
- exit code: 1

tests/common/devices/sonic.py:1971:15: E275 missing whitespace after keyword
tests/qos/qos_sai_base.py:775:9: F841 local variable 'src_port_ip' is assigned to but never used

flake8...............................................(no files to check)Skipped
check conditional mark sort..........................(no files to check)Skipped

To run the pre-commit checks locally, you can follow below steps:

1. Ensure that default python is python3. In sonic-mgmt docker container, default python is python2. You can run
   the check by activating the python3 virtual environment in sonic-mgmt docker container or outside of sonic-mgmt
   docker container.
2. Ensure that the pre-commit package is installed:

sudo pip install pre-commit

3. Go to repository root folder
4. Install the pre-commit hooks:

pre-commit install

5. Use pre-commit to check staged file:

pre-commit

6. Alternatively, you can check committed files using:

pre-commit run --from-ref <commit_id> --to-ref <commit_id>

[vivekverma-arista]

pull request for 202311: #12960