GenericAccessService: remove unused device name/appearance functions due to API changes
GenericAccessService: remove unused device name/appearance functions due to API changes

mbedmicro/mbed,mbedmicro/mbed,kjbracey-arm/mbed,kjbracey-arm/mbed,mbedmicro/mbed,mbedmicro/mbed,kjbracey-arm/mbed,mbedmicro/mbed,kjbracey-arm/mbed