diag: Dont leave /dev/diag as world read/write

ueventd.rc defaults /dev/diag to radio:radio group only.
Remove override from ueventd.mako.rc for this device node as
the default permissions are safer.

Bug: 6933652
Change-Id: I6c21b9aeb185f748f151b5fb85d8f6493d0bc067

Conflicts:
	ueventd.mako.rc
1 file changed