Remove dependence on sync mode from textclassifier tests am: 78e4846376

Original change: https://android-review.googlesource.com/c/platform/external/libtextclassifier/+/2645787

Change-Id: Iab9cec3d973fc9cca7a1c23f98dda818b24dfc11
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>