DO NOT MERGE: Remove vibration XML parser CTS tests

The test APIs are now flagged to be released as system APIs in the next release, so the classes are no longer acessible to CTS built without the flags.

Change-Id: I2c66e03acd505b4531facbf8800e10be8066d5e0
Fix: 353436634
Fix: 353111085
Test: CtsVibratorTestCases
Flag: android.os.vibrator.vendor_vibration_effects