Expeditor: Remove labels that don't exist / chef 12 config
Expeditor: Remove labels that don't exist / chef 12 config

Remove labels that we don't use in chef/chef. Also remove Chef 12 branch setup.

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

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