Hi Rengar,
You can run the following commands in the system view to delete port isolation configurations, including port isolation groups, unidirectional port isolation, and isolation modes.
<HUAWEI> system-view
[HUAWEI] clear configuration port-isolate
Warning: The port isolate will be canceled. Continue?[Y/N]:y
Info: This operation may take a few seconds. Please wait for a moment...done.
I hope it helps!