Remove unused union
Remove unused union

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