Revert Metalava build id update for playground
Revert Metalava build id update for playground

Test: cd paging && ./gradlew bOS
Change-Id: I55d3d38b01ea0cc2ff4455afd82a552a456ddf78

AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx