Updating NuGet.config

Author: pranavkm

NuGet.Config

@@ -2,8 +2,7 @@
 <configuration>
   <packageSources>
     <clear />
-    <add key="AspNetVNext" value="https://www.myget.org/F/aspnetrelease/api/v2" />
-    <add key="xunit" value="https://www.myget.org/F/xunit/api/v2" />
     <add key="NuGet" value="https://nuget.org/api/v2/" />
+    <add key="AspNetMaster" value="https://www.myget.org/F/aspnetmaster/api/v2" />
   </packageSources>
-</configuration>
+</configuration>