Remove network shell script

This seems to not really being used, especially considering
that the init.rc does not have a oneshot service for it, and its
not using the build_policy() and other things to even make it
configurable.

Change-Id: I964f94b30103917ed39cf5d003564de456b169a5
allow system_server to set ro.build.fingerprint

Some devices leave "ro.build.fingerprint" undefined at build time,
since they need to build it from the components at runtime.
See https://android.googlesource.com/platform/frameworks/base/+/5568772e8161205b86905d815783505fd3d461d8
for details.

Allow system_server to set ro.build.fingerprint

Addresses the following denial/error:

  avc:  denied  { set } for property=build.fingerprint scontext=u:r:system_server:s0 tcontext=u:object_r:default_prop:s0 tclass=property_service
  init: sys_prop: permission denied uid:1000  name:ro.build.fingerprint

Bug: 18188956
Change-Id: I98b25773904a7be3e3d2926daa82c1d08f9bcc29
Merge remote-tracking branch 'upstream/master'