Remove 'git submodule' entries from chief script.
Remove 'git submodule' entries from chief script.

mozilla/mozillians,johngian/mozillians,fxa90id/mozillians,fxa90id/mozillians,johngian/mozillians,fxa90id/mozillians,akatsoulas/mozillians,akatsoulas/mozillians,mozilla/mozillians,akatsoulas/mozillians,johngian/mozillians,akatsoulas/mozillians,mozilla/mozillians,johngian/mozillians,mozilla/mozillians,fxa90id/mozillians