Add libincident_test to MTS

+ remove GtsLibIncidentTests (the native GTS tests) from presubmit

Test: m libincident_test
Test: atest libincident_test
Test: m mts && mts-tradefed run mts -m libincident_test
Bug: 157142853
Change-Id: I5c6ea2edfbd29165ec65108c4a71a56698c76a27
3 files changed