Remove black lines in Pokémon Omega Ruby and Pokémon Alpha Sapphire

Hello everyone on the forum, I wanted to ask if anyone knows how to remove those annoying black lines that surround the characters in Pokémon Omega Ruby and Pokémon Alpha Sapphire, as the methods I have seen are from many years ago and no longer work, then if anyone knows a current method to remove them i’d appreciate it if you could share it with me.