Remove legacy libzmq releases and set the default to 4.0.7
Remove legacy libzmq releases and set the default to 4.0.7

We override this in Workstation currently since push jobs client uses
the newer release.

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

chef/omnibus-software,aerobase/omnibus-software,chef/omnibus-software,mattray/omnibus-software,mattray/omnibus-software,mattray/omnibus-software,chef/omnibus-software,chef/omnibus-software,aerobase/omnibus-software,higanworks/omnibus-software,chef/omnibus-software,mattray/omnibus-software,chef/omnibus-software,higanworks/omnibus-software,higanworks/omnibus-software,higanworks/omnibus-software,aerobase/omnibus-software,mattray/omnibus-software,aerobase/omnibus-software,aerobase/omnibus-software