wahoo: ueventd: Don't modify permissions of /dev/hw_random

This addresses an underlying problem since /dev/hw_random is used. The
issue is that EntropyMixer, which runs in system_server, needs to read
from /dev/hw_random, but thanks to our qualcomm ueventd, EntropyMixer
can never accress this node, resulting in warnings like this:

W EntropyMixer: Failed to add HW RNG output to entropy pool
W EntropyMixer: java.io.FileNotFoundException: /dev/hw_random (Permission denied)

AOSP ueventd handles this well, so just remove this line to get things
back to stage. This issue was never exposed because Google derps the
logging here, which is already fixed on Pie.

https://android.googlesource.com/platform/frameworks/base/+/c78a463e875d91eae2cf256042fd99d130217c38

Change-Id: I42c9aaa8f57306536e51c0a17febad57a5a77581

ueventd.hardware.rc

@@ -46,7 +46,6 @@
 /dev/jpeg0                0660   system     camera
 /dev/adsprpc-smd          0664   system     system
 
-/dev/hw_random            0600   root       root
 /dev/sdsprpc-smd          0660   system     system
 
 /dev/wcd-dsp-glink        0660   system     audio