Pull in missing r41064:

Remove references / support of &os; 7.x

Submitted by:   Bjoern Heidotting
Obtained from:  The FreeBSD German Documentation Project


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45671 c2e8774f-c49f-e111-b436-862b2bbc8956