I want to experiment with Smalltalk #shrink but the stock
Squeak4.5-12641.image has AnObsoleteBindingTest and... one other
ObsoleteClass stuck in the image.  Not even Smalltalk
fixObsoleteReferences can get rid of it.

The reference is buried in Environment's 'exports' Dictionary.  I can
certainly remove it manually but how should we fix it in published
image?