Fixed that ETWS test broadcast settings was shown

For Softbank users, we should hide the ETWS test
settings from the emergency alert menu.

Test: Manual
bug: 62989059
Merged-In: Idafd745adba9226482d69950163a99e8928d927f
Change-Id: Idafd745adba9226482d69950163a99e8928d927f
1 file changed