[Materializer] Remove the last call to archetype binding in generic code.
[Materializer] Remove the last call to archetype binding in generic code.

Now all the magic happens in the swift specific code. This removes
a longstanding hack and brings us a step closer to separate core
and language support. Straightforward after the yak was shaved.

apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb