Remove unnecessarily duplicated code in ARMStep
Remove unnecessarily duplicated code in ARMStep

nattthebear/mgba,libretro/mgba,askotx/mgba,askotx/mgba,sergiobenrocha2/mgba,fr500/mgba,mgba-emu/mgba,zerofalcon/mgba,Touched/mgba,AdmiralCurtiss/mgba,sergiobenrocha2/mgba,nattthebear/mgba,AdmiralCurtiss/mgba,jeremyherbert/mgba,sergiobenrocha2/mgba,iracigt/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,askotx/mgba,cassos/mgba,libretro/mgba,MerryMage/mgba,cassos/mgba,Touched/mgba,Touched/mgba,Iniquitatis/mgba,sergiobenrocha2/mgba,iracigt/mgba,Iniquitatis/mgba,iracigt/mgba,cassos/mgba,bentley/mgba,zerofalcon/mgba,zerofalcon/mgba,mgba-emu/mgba,sergiobenrocha2/mgba,libretro/mgba,iracigt/mgba,fr500/mgba,fr500/mgba,matthewbauer/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,jeremyherbert/mgba,bentley/mgba,Iniquitatis/mgba,mgba-emu/mgba,libretro/mgba,matthewbauer/mgba,AdmiralCurtiss/mgba,jeremyherbert/mgba,MerryMage/mgba,Anty-Lemon/mgba,libretro/mgba,askotx/mgba,Anty-Lemon/mgba,MerryMage/mgba,mgba-emu/mgba,fr500/mgba