minor changes to uninstall script
minor changes to uninstall script

ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c