Remove trust agents test if platform has none.

Don't test whether trust agents can be enabled
on devices without trust agents.

Bug: 32134433
Bug: 32981842

Test: Install ctsverifier on aosp_angler-userdebug device run cts verifier check test is missing
Test: Install ctsvierifer on bullhead-userdebug device run ctsvierier check test is present.
Change-Id: I6233e28cdc00960be897bdcacb512f3a470a3443
1 file changed