Resolve docs/code about EWC.NOIDQ

[sloorush]

in docs/Usage/Initialisation.md

## EWC.NOIDQ
If you want to experiment interactively, rather than call `eDQ`, you must set
`EWC.NOIDQ←0` to allow "Interactive DQ" (apologies for the negative switch name) before creating objects.
This will probably change soon.

@cursork says: since @mkromberg reworked ∆DQ we can safely remove it.

[sloorush]

We can safely remove it!