Revert "Frameworks: Port hardware key rebinding"

This reverts commit 62c92de62523e31247d7018c6ecc7b2923c8d2b6.

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/config.xml
	core/res/res/values/gummy_strings.xml
	core/res/res/values/gummy_symbols.xml
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java