Remove unstable feed

Author: mattbrailsford

NuGet.config

@@ -4,7 +4,6 @@
     <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
     <add key="Umbraco Prereleases" value="https://www.myget.org/F/umbracoprereleases/api/v3/index.json" />
     <add key="Umbraco Nightly" value="https://www.myget.org/F/umbraconightly/api/v3/index.json" />
-    <add key="Umbraco Commerce Unstable" value="https://pkgs.dev.azure.com/umbraco/4b02471a-69c1-43bf-a84c-e1e4e11bbf24/_packaging/Umbraco.Commerce/nuget/v3/index.json" />
   </packageSources>
   <packageSourceMapping>
     <packageSource key="nuget.org">
@@ -17,8 +16,5 @@
     <packageSource key="Umbraco Nightly">
       <package pattern="Umbraco.*" />
     </packageSource>
-    <packageSource key="Umbraco Commerce Unstable">
-      <package pattern="Umbraco.Commerce.*" />
-    </packageSource>
   </packageSourceMapping>
 </configuration>