clean up old sage (5.6, 5.7 and 5.8)

Package-Manager: portage-2.2.8-r2
Remove old sage (5.6 to 5.8)

Package-Manager: portage-2.2.8-r2
clean up of old sage (5.6 to 5.8)

Package-Manager: portage-2.2.8-r2
remove old (5.6 to 5.8)

Package-Manager: portage-2.2.8-r2
remove old sagenb 0.10.2. last used in a removed sage.

Package-Manager: portage-2.2.8-r2
removing old unused eclib

Package-Manager: portage-2.2.8-r2