Delete lines 17 to 25 in START GCODE.
Search for "pull back filament to AMS" in Notepad, etc., and delete or comment out the relevant section.
; pull back filament to AMS
;M620 S255
;G1 X20 Y50 F12000
;G1 Y-3
;T255
;G1 X65 F12000
;G1 Y265
;G1 X100 F12000 ; wipe
;M621 S255
It is your own responsibility.