The following packages are part of Emacs proper since at least version 23.1: app-emacs/calc: Included with Emacs 22.1. Sources maintained in Emacs tree. Last stand-alone release in 1996. app-emacs/easypg: Included with Emacs 23.1. Upstream HOMEPAGE vanished. Last stand-alone release in 2008. app-emacs/ibuffer: Included with Emacs 22.1. HOMEPAGE vanished. Last stand-alone release in 2002. app-emacs/table: Included with Emacs 22.1. Last stand-alone release in 2002. app-emacs/tramp: Included with Emacs 22.1. Stand-alone releases are still available, but considered as "bleeding-edge" by upstream.
app-emacs/htmlfontify: Included with Emacs 23.2. Cannot be compiled with Emacs 23. Last stand-alone release in 2003.
Removed.