simplify dependencies

Author: dsyme

.nuget/NuGet.Config

@@ -6,7 +6,6 @@
   <packageSources>  
 
     <clear />
-    <add key="dotnet-core" value="https://www.myget.org/F/dotnet-core/api/v3/index.json" />
     <add key="nuget.org" value="https://www.nuget.org/api/v2/" />  
   </packageSources>  
 </configuration>

packages.config

@@ -14,6 +14,5 @@
   <package id="Microsoft.DiaSymReader" version="1.0.8" />
   <package id="FsSrGen" version="3.0.0" targetFramework="net46" />
   <package id="FSharp.SRGen.Build.Tasks" version="3.0.0" targetFramework="net46" />
-  <package id="Microsoft.VisualFSharp.Core.Redist" version="1.0.0" />
   <package id="System.ValueTuple" version="4.0.0-rc3-24212-01" />
 </packages>