ptr1337 [1] filed a deletion request for gcc-multilib-trunk-git [2]: Requesting deletion because multilib was merged already into gcc. Also it would make more sense to just hold the gcc-git package, where is actually lib32-gcc-libs-git missing due its already provided here.
[1] https://aur.archlinux.org/account/ptr1337/ [2] https://aur.archlinux.org/pkgbase/gcc-multilib-trunk-git/
