Remove old link

data-sources.md

@@ -10,7 +10,7 @@ Attribution is required for many of data providers. Some license information is
 
 OpenAddresses is by far the largest dataset by number of records used by Pelias. Even though it only contains address data (as in no building names or other metadata), it's a great resource for global geocoding.
 
-The license for each individual source within OpenAddresses differs. Many of the sources require [attribution](https://mapzen.com/rights/), and many others have a share-alike clause.
+The license for each individual source within OpenAddresses differs. Many of the sources require attribution, and many others have a share-alike clause.
 *Note:* Pelias does _not_ currently return license information directly, but the license and attribution requirements for each source within OpenAddresses can be determined from the machine-readable [state.txt](http://results.openaddresses.io/state.txt) file published on the OpenAddresses website.
 
 ## Who's on First