Revert "Make opaque-jni-ids:swapable more efficient"

This reverts commit 4e7dd70e3ee7a25089bed791df8865966cb4b837.

Reason for revert: Breaks art-jit column

Change-Id: If1ea54c45f340a06b4601c1c8494b7dd7e8f7bf8
Test: Manual
Test: count-fields.py
Bug: 134162467
11 files changed