We do not want platform code to be using TRACE_TAG_APP.
This is being moved to system/tools/aidl and, with the new name
libandroid_aidltrace, using TRACE_TAG_AIDL.

Test: atest aidl_unittests aidl_integration_test && atest
CtsNdkBinderTestCases

Change-Id: I92ee2bf75fe82b0f212bb4a1908df482d6e81933