launchperf use the private APIs in android.test.runner. So
LOCAL_SDK_VERSION of launchperf will be changed to platform.
Bug: 77577799
Test: m -j
Merged-In: I4ab94e009d96c297b37c7afee35f8ddd2546b977
Change-Id: I4ab94e009d96c297b37c7afee35f8ddd2546b977