auth: Remove unused code.
auth: Remove unused code.

kedazo/libssh,bigcat26/libssh-mod,nviennot/libssh,bigcat26/libssh-mod,nviennot/libssh,wangshawn/libssh,DouglasHeriot/libssh,wangshawn/libssh,mwgoldsmith/ssh,Distrotech/libssh,bigcat26/libssh-mod,sebadoom/libssh,elastichosts/libssh,DouglasHeriot/libssh,sebadoom/libssh,pouete/libssh,kedazo/libssh,robxu9/libssh,taikoo/libssh,pouete/libssh,nviennot/libssh,pouete/libssh,DouglasHeriot/libssh,robxu9/libssh,robxu9/libssh,mwgoldsmith/libssh,bigcat26/libssh-mod,mwgoldsmith/ssh,wangshawn/libssh,Distrotech/libssh,robxu9/libssh,taikoo/libssh,mwgoldsmith/ssh,elastichosts/libssh,DouglasHeriot/libssh,mwgoldsmith/ssh,sebadoom/libssh,nviennot/libssh,sebadoom/libssh,mwgoldsmith/libssh,pouete/libssh,Distrotech/libssh,taikoo/libssh,taikoo/libssh,kedazo/libssh,Distrotech/libssh,mwgoldsmith/libssh,wangshawn/libssh,kedazo/libssh,mwgoldsmith/libssh,elastichosts/libssh