Revert "emerge: Implement "--alert""

This reverts commit 1a00ddf5fb089724a127c8dc72d63f10ae72abbf. It had
some furiously annoying mistakes in the commit message. Also, someone
alluded to the man page being too short. Thanks, Brian.

Signed-off-by: Alexander Berntsen <bernalex@gentoo.org>
7 files changed