Revert "[DexLoadReporter] Report classloader contexts directly f..."

Revert "Fix shared libraries not being reported via Reporter"

Revert submission 1198456-slclc

Reason for revert: Fails on luci:
https://ci.chromium.org/p/art/builders/ci/host-x86_64-cdex-fast/3123

Exempt-From-Owner-Approval: pure revert

Bug: 148494302
Reverted Changes:
I46d8d9105: Fix shared libraries not being reported via Report...
I00357cfe0: [DexLoadReporter] Report classloader contexts dire...

Change-Id: Ib58066e8f059642a11d9eaab02ec0b8b3217e487