Merge "simpleperf: Remove unused variable" into main am: 38619fcdb5

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2847994

Change-Id: I1304051288478707c69e9abd75e1b17c85b38ac8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>