Remove deprecated GTest macro. am: 6205ebcc1d am: 59e0c195b1 am: 8eddae67de

Original change: https://android-review.googlesource.com/c/platform/external/fmtlib/+/2469727

Change-Id: Icd3daaba960d7dbc1d522d4e56045b203513499e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>