py/vm: Don't do unnecessary updates of ip and sp variables.
py/vm: Don't do unnecessary updates of ip and sp variables.

Neither the ip nor sp variables are used again after the execution of the
RAISE_VARARGS opcode, so they don't need to be updated.

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