fix: remove "duplicated" board positions from Book.txt#39

eugenioenko wants to merge 1 commit intoSebLague:Chess-V2-UCISebLague/Chess-Coding-Adventure:Chess-V2-UCIfrom

eugenioenko:fix/repeated-book-positionseugenioenko/Chess-Coding-Adventure:fix/repeated-book-positionsCopy head branch name to clipboard