Remove MTS_DRAGONFLY_F411RE post binary hook that adds the bootloader
Remove MTS_DRAGONFLY_F411RE post binary hook that adds the bootloader

Bootloader to be added using mbed_app.json

mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed