Revert "abitidy: per-corpus symbol/alias handling" am: 1633ecc985 am: 3eee8835d2

Original change: https://android-review.googlesource.com/c/platform/external/libabigail/+/2337665

Change-Id: Iba9c1eb13fd8c73a93db595ffc3ee3efd6652653
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>