Remove VelocityTrackerTest from TEST_MAPPING

This test was moved to CtsInputTestCases, which are already running in
presubmit. So we just need to remove it from the TEST_MAPPING.

Bug: 296648212
Test: (cd frameworks/native/services/inputflinger && atest)
Change-Id: I6a87629e0c19d8ca39092aa20ea894ca56df7c6e
1 file changed