GA from config 2, make it standard. call go around flaps and retract one step of flaps. you fly a F speed minimum when conf 2, don't you. thus when you put any additionnal thrust your are above F and no restriction at all to retract flaps 1.
regarding the rejected landing, I mean (touch & go), the call is the same. and if you forget the flaps when landing flaps full you'll have a nasty red warning for wrong flaps take-off (you touched the ground) configuration. once in the air, maintain 10° until the positive climb, then gear up, then pitch 15° and continue for a std go around. don't try to avoid a second touch of the runway by pitching up, stick to 10°