haptic: fix test for input customized feedback feature

Detected by b/354049335.
VibratorManagerServiceTest#performHapticFeedback_doesNotRequireVibrateOrBypassPermissions
failed because of wrong VibrationAttributes.

The fix is to removed VibrationAttributes assertion from the tests since
those should be covered by HapticFeedbackVibrationProviderTest(ag/29002964).

Flag: android.os.vibrator.haptic_feedback_input_source_customization_enabled
Test: atest HapticFeedbackVibrationProviderTest
Test: run test above with Flag enabled
Bug: 354049335
Change-Id: Iea9510bf7c953cc1872d278bc3349b755cd426bf