boxdumper: Remove redundant _O_BINARY settings because of the previous commit.
boxdumper: Remove redundant _O_BINARY settings because of the previous commit.

maki-rxrz/L-SMASH,canbal/l-smash,dwbuiten/l-smash,silverfilain/L-SMASH,dwbuiten/l-smash,silverfilain/L-SMASH,l-smash/l-smash,l-smash/l-smash,l-smash/l-smash,canbal/l-smash,silverfilain/L-SMASH,maki-rxrz/L-SMASH