Remove support for OLD_HISTORY

The OLD_HISTORY constants has been set to false for almost
ten years. Need to simplify history support in preparation for
including history in BatteryUsageStats.

Bug: 180765532
Test: atest FrameworksCoreTests:com.android.internal.os.BatteryStatsHistoryTest
Change-Id: I8b7f55eb6e9e1c896dc046d2e6dafba885bf8970