Don't label /dev/{ akm8973.* accelerometer } from system sepolicy

These /dev nodes are device-specific and should be labeled from device
policy. Moreover, pixels don't have these /dev nodes.

Bug: 110962171
Test: boot pixel 3
Change-Id: I37ca9a956130eb4763c75f5e8a0decbd4f7b97a7

private/file_contexts

@@ -68,8 +68,6 @@
 # Devices
 #
 /dev(/.*)?		u:object_r:device:s0
-/dev/akm8973.*		u:object_r:sensors_device:s0
-/dev/accelerometer	u:object_r:sensors_device:s0
 /dev/adf[0-9]*		u:object_r:graphics_device:s0
 /dev/adf-interface[0-9]*\.[0-9]*	u:object_r:graphics_device:s0
 /dev/adf-overlay-engine[0-9]*\.[0-9]*	u:object_r:graphics_device:s0