Cleanup TARE flags.

Remove redundant and obsolete flag constants.

Bug: 158300259
Test: atest CtsAlarmManagerTestCases
Test: atest CtsBatterySavingTestCases
Test: atest CtsJobSchedulerTestCases
Test: atest SettingsBackupTest
Test: atest frameworks/base/services/tests/mockingservicestests/src/com/android/server/alarm
Test: atest frameworks/base/services/tests/mockingservicestests/src/com/android/server/job
Test: atest frameworks/base/services/tests/mockingservicestests/src/com/android/server/tare
Test: atest frameworks/base/services/tests/servicestests/src/com/android/server/job
Test: atest frameworks/base/services/tests/servicestests/src/com/android/server/tare
Change-Id: I962e01748702bd2335692fea53f49dc513efc56a