Revert "Merge pull request #17991 from bobsilverberg/power_button"

This reverts commit 86301a24e8a9bf7153b58be597323dc92bca9b99, reversing
changes made to 76e87fb7c2aa4ae4311b92ddab3e3fd484f28094.
Merge pull request #17214 from qdot/983507-flight-mode-radio-off

Bug 983507 - Make airplane mode icon appear via airplaneMode setting, not RIL status
Merge pull request #17655 from frsela/STK/Bug988362

Bug 988362 - [STK]The maxlength of the inputbox didn't set corretly in GET_INPUT command. (Increment wait time), r=timdream
Merge pull request #18058 from mcav/gelam-tarako

Bug 991567 - [Tarako][Email] Email app is killed while downloading an at...
Merge branch 'v1.3' into v1.3t