Clean up large vibration effect related flags

notif_channel_crop_vibration_effects and notif_channel_estimate_effect_size have been fully launched for some time now.

Bug: 409605112
Bug: 409611764
Test: NotificationChannelTest (cts & unit)
Flag: EXEMPT flag removal
Change-Id: If9e8597b97b830f959a1f0ccf1bd9759b4a6bf97