Revert #3706

Revert changes in #3706 due to the inconveniency which developers reported by commenting the added line.

VisualStudio.gitignore

@@ -207,7 +207,7 @@ PublishScripts/
 *.nuget.targets
 
 # Nuget personal access tokens and Credentials
-nuget.config
+# nuget.config
 
 # Microsoft Azure Build Output
 csx/