We are performing lookups along augmentation instantiation axis using
APIs which are going away. Cleanup the code and move the traversal to
BindingRuntimeTypes.
Leave a FIXME for getting the required intelligence from
GeneratorReactor as well as some sorely-needed documentation as to what
exactly is going on.
JIRA: MDSAL-695
Change-Id: I6dd7ad7807546091bfbc5cced48b574d6bff49e2
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>