Remove sdcard developer option, avoid data crash.

Remove READ_EXTERNAL_STORAGE enforcement UI, since the permission is
now always enforced.  Check to see if bandwidth module is enabled
when launching data usage, and finish gracefully if disabled.

Bug: 10116515, 10392597
Change-Id: Id0295c405b780a53867934b3bcd0a5f56db7d87a
3 files changed