Remove example entries in blacklisted_skills config
Remove example entries in blacklisted_skills config

The default mycroft.conf included some arbitrary examples in the
actual blacklisted_skills configuration. If a user attempted to
use a Skill that matched, it would be prevented from loading.

MycroftAI/mycroft-core,MycroftAI/mycroft-core,forslund/mycroft-core,forslund/mycroft-core