Trying to delete some floating variables

[mlauber71]

@VAGR_ISK there is a feature request and a lengthy discussion with some suggestions and components and sample workflows:

overwrite Path variable, how to

@gonhaddock currently there only seems to be the way to try and use a Component that would not let one variable thru. Apparently there is a task (AP-16515) to create a variable filter. I think one will have to be careful since this might result in unintended consequences.