Remove empty stubbed threadapi.cpp methods
Remove empty stubbed threadapi.cpp methods

sandeepmistry/AzureIoT,arduino-libraries/AzureIoT,sandeepmistry/AzureIoT,obsoleted/AzureIoT,obsoleted/AzureIoT,stefangordon/AzureIoT,arduino-libraries/AzureIoT,arduino-libraries/AzureIoT,stefangordon/AzureIoT