Sequencer - VSE is it possible to delete channels?

Hi everyone,

I have a sound reference imported as audio in the sequencer,
I would like to delete all the other standard unused channels and I cannot find how to delete a channel, is it possible to delete a channel from the UI? Can you help me ?

I’ve find a similar question here that is not solved.
Thanks!

In fact in 3.6.15 there is a View → Limit View to Contents… which… doesn’t seem to work ???

Exactly Limit View to Contents does not seem to work, can you confirm?
The same question I’ve founded is this request

Deleting channel in the sequencer is not possible?