clean up hal types

private/file_contexts

private/hal_audio.te

private/hal_nfc.te

private/hal_vibrator.te

private/hal_vr.te

public/android_hardware_audio_2_0_service.te

public/android_hardware_nfc_1_0_service.te

public/android_hardware_vibrator_service.te

public/android_hardware_vr.te

public/audioserver.te

public/hal_audio.te

public/hal_nfc.te

public/hal_vibrator.te

public/hal_vr.te

public/nfc.te

public/system_server.te