### Description How to reproduce: remove SERIAL from DEVICE_HAS in targets json file, and compile a target (with no cellular): ```` [Error] CellularDevice.h@197,0: #20: identifier "UARTSerial" is undefined [Error] CellularContext.h@269,0: #20: identifier "UARTSerial" is undefined [Error] AT_CellularContext.h@61,0: #20: identifier "UARTSerial" is undefined [Error] AT_CellularContext.cpp@92,0: #20: identifier "UARTSerial" is undefined [Error] AT_CellularContext.cpp@105,0: #20: identifier "UARTSerial" is undefined ```` ### Issue request type [ ] Question [ ] Enhancement [x] Bug