Remove VibrationXmlParser @TestApi annotations

Remove redundant @TestApi annotation from @SystemApi methods.

Fix: 349183824
Flag: android.os.vibrator.vibration_xml_apis
Test: VibrationEffectXmlSerializationTest
Change-Id: Ib90ce5b65896d38e3437bfc4c3d9e8378c0b1f35
3 files changed