Revert "fb: Change density on the fly"

This reverts commit 65e95374a749e6e63f516d5f5985b75e2aa4b9e4.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java