The AccessPrivateDataTest and CreatePrivateDataTest is directly testing
the proc file of xt_qtaguid module. These two test will no longer valid
after we block the access from untrusted app to qtaguid proc file. So
remove the AccessPrivateDataTest and added a new qtaguid test to make
sure apps with SDK 28 or above cannot access qtaguid proc file.
Bug: 30950746
Bug: 68774956
Test: run cts -m CtsAppSecurityHostTestCases \
-t android.appsecurity.cts.AppSecurityTests
Change-Id: I957ba31fea392982e7d15eda2afd9580299192f2
3aedd8b21a