ndk: delete Abigail XML ABI dumps am: 2e06ba9bc4 am: 77bef7018b

Original change: https://android-review.googlesource.com/c/platform/prebuilts/abi-dumps/ndk/+/2755487

Change-Id: I1ada291d0226b55596f21daeeb988501d5cbeedf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>