py/mpstate.h: Remove obsolete comment about nlr_top being coded in asm.
py/mpstate.h: Remove obsolete comment about nlr_top being coded in asm.

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