Removed changelog for nw13 since it's not consistent.

Author: jyapayne

files/settings.cfg

@@ -367,4 +367,4 @@ linux_64_dir_prefix = 'node-webkit-v{}-linux-x64'
                                  'force_download']"""
 
 [version_info]
-    urls="""['https://raw.githubusercontent.com/nwjs/nw.js/nw13/CHANGELOG.md', 'https://raw.githubusercontent.com/nwjs/nw.js/master/CHANGELOG.md']"""
+    urls="""['https://raw.githubusercontent.com/nwjs/nw.js/master/CHANGELOG.md']"""