Remove deprecated GTest macro. am: 6205ebcc1d

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

Change-Id: Ia5a4b72286b6c84c2895802b6303a9993a1ebdae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>