install_deps.sh: arch: we build with 32-bit support by default, thus we will need binutils-multilib by default.
Merge pull request #499 from matthiaskrgr/install_deps

install_deps.sh: arch: we build with 32-bit support by default, thus we ...
Revert "install_deps.sh: arch: we build with 32-bit support by default, thus we will need binutils-multilib by default."

This reverts commit 5816be09628569ae7f0b14dd5b1685a48b0810ef.