Revert "Clock: use mCalendar to get seconds"

This reverts commit 225bb4c0f916eca7fdb03a8fc7659388914e809d.

(cherry picked from commit 2b4be378b8b6ba1d057b40afb068576761458aa6)
Revert "Frameworks/base: Second Clock (1/2)"

This reverts commit 0d55b51ac79f56063479db2fec247c14737cec19.

Conflicts:

	core/java/android/provider/Settings.java

(cherry picked from commit 5e9c6463c945ef20efc37ad82df4406ae17945c6)