Unit Test: Leaves left over .ini files

[DonLakeFlyer]

When you run unit tests locally you end up with a pile of ini files:

QGroundControl_unittest_AdditionalStatesCoverageTest				QGroundControl_unittest_PlatformTest.ini
QGroundControl_unittest_AdditionalStatesCoverageTest.ini			QGroundControl_unittest_ProgressStateTest
QGroundControl_unittest_AdditionalTransitionsCoverageTest			QGroundControl_unittest_ProgressStateTest.ini
QGroundControl_unittest_AdditionalTransitionsCoverageTest.ini			QGroundControl_unittest_QGCAbstractStateTest
QGroundControl_unittest_ADSBTest						QGroundControl_unittest_QGCAbstractStateTest.ini
QGroundControl_unittest_ADSBTest.ini						QGroundControl_unittest_QGCArchiveModelTest
QGroundControl_unittest_APMAirframeComponentControllerTest			QGroundControl_unittest_QGCArchiveModelTest.ini
...