Exclude CtsPreferenceTestCases from cts-on-gsi

Bug: b/183659262
Change-Id: I1f927c3f2d08871315b134cd67ba0c0efe1db6bc
Merged-In: Icd8e2e1a26d5c3b49cc45b03fb9ae495050d0adc
Test: Treehugger
1 file changed