Omit timeout as default keyword until issue 387528 is fixed

What does this MR do and why?

Currently timeout does not work as default keyword, as can be read in Issue 387528.

Therefore it makes sense to remove it from this docs section, as it is very confusing currently. Testing a feature that is claimed to work, just to go into debugging until you find the open issue is unnecessarily time consuming.

When the issue is fixed, this change needs to be reverted.

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