Remove left over config.json

config.json

-{
-	"dn_base": "dc=example,dc=com",
-	"bind_password": "thisisthebindpassword",
-	"api_baseurl": "http://localhost:5000/api/v1",
-	"api_key": "secretapikey",
-	"listen_addr": "127.0.0.1:3389",
-	"cache_ttl": 60,
-	"enable_mail": false
-}