Drop dead experimental code

Warning: I honestly don't know what the purpose of this
UnitTestsList hook code was. But it's obvious that it's dead code
now, right? The array was emptied in previous commits, e.g. Iece4a23.
Should be easy to recover these snippets from the history if they
are needed again.

Change-Id: Iab6bf24c9602c63310c94d7e77d7975be07c7058
Merge "Drop dead experimental code"