Revert^2 "Set build files for the mobly snippet lib" am: d633730be0 am: 6f159ac535 am: 3b6d939242 am: f05054a19d

Original change: https://android-review.googlesource.com/c/platform/external/mobly-snippet-lib/+/1941093

Change-Id: I5cd5f46f397f6c2e6d383026176e7e7ac71852a6