Removing sendTronLog flag from BatterySaverPolicy.

The functionality isn't being used so there's no point keeping it
around.

Bug: 79580230
Test: android.provider.SettingsBackupTest
Test: atest com.android.server.power.PowerManagerServiceTest
Test: atest com.android.server.power.batterysaver.BatterySaverPolicyTest
Test: atest com.android.server.power.batterysaver.BatterySaverStateMachineTest
Test: atest com.android.server.power.batterysaver.BatterySavingStatsTest
Test: atest CtsBatterySavingTestCases
Change-Id: I8d0d2df65fa2b8d7b22a2f03e8aa24e9a93e9cbe