Remove dead Clownfish::Host-based code.
Remove dead Clownfish::Host-based code.

Now that the callback wrappers no longer need Clownfish::Host, eliminate
the functions used to generate code which used it.

nwellnhof/lucy,apache/lucy,kidaa/lucy,pombredanne/apache-lucy,kidaa/lucy,nwellnhof/lucy,nwellnhof/lucy,pombredanne/apache-lucy,apache/lucy,rbevers/lucy,apache/lucy,apache/lucy,nwellnhof/lucy,apache/lucy,rectang/lucy,kidaa/lucy,rbevers/lucy,rectang/lucy,pombredanne/apache-lucy,nwellnhof/lucy,pombredanne/apache-lucy,nwellnhof/lucy,pombredanne/apache-lucy,pombredanne/apache-lucy,rbevers/lucy,apache/lucy,apache/lucy,rbevers/lucy,rectang/lucy,rectang/lucy,rectang/lucy,kidaa/lucy,rbevers/lucy,rectang/lucy,rbevers/lucy,rectang/lucy,rbevers/lucy,pombredanne/apache-lucy,kidaa/lucy,kidaa/lucy,kidaa/lucy,kidaa/lucy,nwellnhof/lucy