Revert "Reland "ANDROID: suppress unused variable warning"" am: e2ac889918 am: e3d47e9920 am: dae8b9e803 am: 56701fd86b

Original change: https://android-review.googlesource.com/c/platform/external/exfatprogs/+/2750684

Change-Id: I1460e6d327596d55d30c11cea3c1723b48c07c63
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>