remove test skip since problem fixed in qonnx

[jmitrevs]

Description

There currently is one test that is skipped because the qonnx channels-last conversion fails with it. Wit the current head of qonnx, this is no longer the case, so we no longer need to skip the test. However, we need to update our test environment first, so this is created as a draft at the moment

Type of change

[x] Other (Specify) Stop skipping a test

Tests

The pytests should all pass after we create a new testing container.

Checklist

• I have read the guidelines for contributing.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have installed and run pre-commit on the files I edited or added.
• I have added tests that prove my fix is effective or that my feature works.