Don't show ui do unit tests

src/AutoPilotPlugins/PX4/Tests/FlightModeConfigTest.cc

@@ -93,7 +93,6 @@ void FlightModeConfigTest::init(void)
 
     _configWidget = new FlightModeConfig;
     Q_CHECK_PTR(_configWidget);
-    _configWidget->setVisible(true);
     
     // Setup combo maps
     

src/qgcunittest/PX4RCCalibrationTest.cc

@@ -167,8 +167,6 @@ void PX4RCCalibrationTest::init(void)
     _calWidget = new PX4RCCalibration();
     Q_CHECK_PTR(_calWidget);
     _calWidget->_setUnitTestMode();    
-    _calWidget->setVisible(true);
-    
 
     // Get pointers to the push buttons
     _cancelButton = _calWidget->findChild<QPushButton*>("rcCalCancel");