Microhard - removed unneeded settings

src/Microhard/MicrohardHandler.cc

src/Microhard/MicrohardHandler.h

src/Microhard/MicrohardManager.cc

src/Microhard/MicrohardManager.h

src/Microhard/MicrohardSettings.cc

src/Microhard/MicrohardSettings.h

src/Microhard/MicrohardSettings.qml

src/QGCToolbox.cc

src/QGCToolbox.h

src/Settings/App.SettingsGroup.json

src/Settings/AppSettings.cc

src/Settings/AppSettings.h