Merge "Remove unused code from the integrity service serializer and parser." into main am: 5991319aa2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3325753

Change-Id: I466dfaeb8639223b903be11701325142ee119bd8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>