Revert "Add version specific extension-list"

Causing lots of unforeseen breakages.

This reverts commit 049259d18ddf17294bdbcf0a222d4d874b5a3acf.

Change-Id: I507b7725f124dff08059b1a2358d8ca90ba6a9d0
Merge "Revert "Add version specific extension-list""