Revert "SystemUI: add left and right virtual buttons while typing"

This reverts commit 64b26c7c737bb122a26c0eb8e1596694fdcf461b.
SystemUI: add left and right virtual buttons while typing

Change-Id: Iea446443d33ff305765e47c86523b619676116ac

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
Revert "QS: New torch icon"

This reverts commit 8619631da94f7a41dffcd9bbee6df0470bcc2026.