[automerger skipped] libsnapshot: Remove flaky image creation test. am: 1136e2fc -s ours

am skip reason: Merged-In I6235d11033d2f30efe530077b877863ba2574810 with SHA-1 5b9c9ba1 is already in history

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2604245



Change-Id: I60f0a27e7df8a4a119fd7e28b74e22dbf67fbddf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>