Fix invalid "mbed" firmware for Nucleo F411RE
Fix invalid "mbed" firmware for Nucleo F411RE

jrobeson/platformio,platformio/platformio-core,TimJay/platformio,ZachMassia/platformio,mplewis/platformio,platformio/platformio-core,valeros/platformio,jrobeson/platformio,dkuku/platformio,bkudria/platformio,jrobeson/platformio,TimJay/platformio,eiginn/platformio,bkudria/platformio,TimJay/platformio,mcanthony/platformio,bkudria/platformio,jrobeson/platformio,bkudria/platformio,platformio/platformio,TimJay/platformio,atyenoria/platformio,mseroczynski/platformio,TimJay/platformio