gnu-toolchain.nix: Remove -fno-math... flags.
gnu-toolchain.nix: Remove -fno-math... flags.

Doesn't seem like a safe thing to do, maybe gcc/newlib code needs these functions internally.

ambrop72/aprinter,ambrop72/aprinter,ambrop72/aprinter,ambrop72/aprinter,ambrop72/aprinter,ambrop72/aprinter,ambrop72/aprinter