Revert "Walk up the super chain to find an IMT to share."

This reverts commit fa26b96f2f56ea2380d96922f3c859a2c3b417e8.

Bug: 266937358

Reason for revert: Breaks libcore tests

Change-Id: I4a889029203ffbc6ecdd09c4d5e4dea163da0ffc
4 files changed