Partial revert of ag/3266570

Changes to the clearkey plugin broke existing vts
tests, and those tests can't be changed due to
backward compatibility requirements. This CL
reverts the tests added in ag/3266570.

Test: run cts -m CtsMediaTestCases -t
    android.media.cts.ClearKeySystemTest#testSetProperties

bug:70660219
Change-Id: I32e6ac30bae5e9fe2d0520de10c782cd96342278
1 file changed