For anyone trying to figure out how to get rid of the banner, make sure you have a switch assigned to ‘select item’ in my case Triple Tap, which I just make sure to avoid by using two fingers / alternating tap locations
My setup:
Full screen Switch Tap: my gesture
Full screen Switch Long Press: Exit Recipe (without this it seems impossible to exit queued actions even on the lock screen)
Triple Tap: Select Item (I just tap in different places / two fingers to avoid this)
To queue a bunch of gestures just tap a bunch in different places. To exit the recipe, long press the screen. To stop switch control, triple click the lock button then lock the screen.
Hope this helps someone else with Poke Genie scanning in Pokemon Go!