Remove redundant key/value pairs from config.json (#496)
Remove redundant key/value pairs from config.json (#496)

The slug is not used anywhere. We initialize a track based on knowing the Track ID.
Since the repository is always named after the track ID, this field, too, is redundant,
as it can be inferred.
mweb/python,behrtam/xpython,smalley/python,exercism/python,exercism/xpython,behrtam/xpython,exercism/xpython,N-Parsons/exercism-python,jmluy/xpython,smalley/python,exercism/python,N-Parsons/exercism-python,pheanex/xpython,mweb/python,jmluy/xpython,pheanex/xpython