Remove the sites-cookbooks dir from the cookbook_path default config
Remove the sites-cookbooks dir from the cookbook_path default config

sites-cookbooks was the way to build out your Chef infrastructure circa
2010, but was long ago removed from documentation and we've slowly
killed off bits of the functionality like the merging.

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

jaymzh/chef,mattray/chef,jaymzh/chef,MsysTechnologiesllc/chef,mattray/chef,nvwls/chef,chef/chef,mwrock/chef,gene1wood/chef,mattray/chef,MsysTechnologiesllc/chef,nvwls/chef,higanworks/chef,higanworks/chef,nvwls/chef,chef/chef,MsysTechnologiesllc/chef,higanworks/chef,nvwls/chef,gene1wood/chef,mwrock/chef,chef/chef,higanworks/chef,mattray/chef,tas50/chef-1,tas50/chef-1,mwrock/chef,nvwls/chef,chef/chef,jaymzh/chef,MsysTechnologiesllc/chef,mwrock/chef,jaymzh/chef,mattray/chef,tas50/chef-1,higanworks/chef,tas50/chef-1,gene1wood/chef,gene1wood/chef,nvwls/chef