SimpleLauncher debug parameter doesn't control anything

[benclifford]

Describe the bug
SimpleLauncher has a parameter "debug" which doesn't control anything. I think this probably comes from a time where it was expected that all launchers would take roughly the same parameters, which stopped being true a long time ago. The base class Launcher also has a debug parameter that is similarly unused, I think.

Probably this should be removed to lessen user confusion.

Expected behavior
Parameters should only exist if they do something