Cleanup deprecated tools am: 97418f6a8b am: 3aee051e81 am: b85fc895cb

Original change: https://android-review.googlesource.com/c/platform/system/tools/mkbootimg/+/2181574

Change-Id: I0ca0334c5d89986f4efe1b51f5ceb9a1d8238b3a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>