Introspection.py method "extract_args_from_signature" contains dead CLI 2.0 code

[tjprescott]

https://github.com/Microsoft/knack/blob/master/knack/introspection.py#L71

This makes reference to the no_wait_param which is used by CLI 2.0 to expose --no-wait and is pretty CLI specific. Regardless, all of this code is dead because there's no good way to pass anything into this method, so the default branch is always triggered.

My recommendation would be to remove this code.

[tjprescott]

Within the CLI, I add this parameter back in "create_command". It is added to the args after "extract_args_from_signature". I add both --no-wait and --yes here to keep things easier to maintain.