Revert "Make VelocityTracker 1D"

Revert "Conform to 1D VelocityTracker"

Revert submission 19762050-generic_vt

Reason for revert: b/245842062
Reverted Changes:
I181af7a03:Make VelocityTracker 1D
Ib0be0fc38:Conform to 1D VelocityTracker

Change-Id: Ife5675e4abdf154eb6466f687e52b6a427860d26
6 files changed