Since [the sync is done](https://github.com/rust-lang/rustc_codegen_gcc/pull/535), we can now revert [this change](https://github.com/rust-lang/rustc_codegen_gcc/blob/98ed962c7d3eebe12c97588e61245273d265e72f/build_system/build_sysroot/Cargo.toml#L9-L11).