[AGIPD] Remove references to DETLAB mini-half

Description

This removes the reference to DETLAB, which we had temporarily introduced to test the mini-half before it moved to HED and produced real data.

How Has This Been Tested?

By running the notebooks with these DETLAB and ensuring that they fails accordingly.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Reviewers

@ahmedk @kamile