.gitattributes: Remove special text handling of stm32 usbdev files.
.gitattributes: Remove special text handling of stm32 usbdev files.

pozetroninc/micropython,adafruit/micropython,bvernoux/micropython,pozetroninc/micropython,henriknelson/micropython,tobbad/micropython,MrSurly/micropython,henriknelson/micropython,adafruit/circuitpython,swegener/micropython,pfalcon/micropython,pfalcon/micropython,ryannathans/micropython,kerneltask/micropython,henriknelson/micropython,tobbad/micropython,pfalcon/micropython,kerneltask/micropython,adafruit/circuitpython,tobbad/micropython,trezor/micropython,adafruit/micropython,adafruit/circuitpython,MrSurly/micropython,selste/micropython,adafruit/circuitpython,adafruit/micropython,selste/micropython,dmazzella/micropython,kerneltask/micropython,ryannathans/micropython,henriknelson/micropython,selste/micropython,MrSurly/micropython,adafruit/micropython,adafruit/circuitpython,tobbad/micropython,pozetroninc/micropython,pfalcon/micropython,ryannathans/micropython,selste/micropython,trezor/micropython,tobbad/micropython,pramasoul/micropython,bvernoux/micropython,dmazzella/micropython,swegener/micropython,bvernoux/micropython,pramasoul/micropython,bvernoux/micropython,tralamazza/micropython,swegener/micropython,pramasoul/micropython,dmazzella/micropython,selste/micropython,henriknelson/micropython,swegener/micropython,pramasoul/micropython,trezor/micropython,ryannathans/micropython,ryannathans/micropython,pfalcon/micropython,tralamazza/micropython,dmazzella/micropython,kerneltask/micropython,pozetroninc/micropython,trezor/micropython,kerneltask/micropython,MrSurly/micropython,trezor/micropython,bvernoux/micropython,adafruit/circuitpython,tralamazza/micropython,swegener/micropython,tralamazza/micropython,MrSurly/micropython,pramasoul/micropython,adafruit/micropython,pozetroninc/micropython