Lambda blueprints for V4 SDK (#2058)

* Remove the VS 2017 and 2019 blueprints from repository

* Update Lambda blueprint's package references including AWS SDK for .NET version to V4

* Refresh package references since last commit

Author: normj

.autover/changes/59fc680c-b674-4bf6-93f1-71c0ece84715.json

@@ -0,0 +1,11 @@
+{
+  "Projects": [
+    {
+      "Name": "Amazon.Lambda.Templates",
+      "Type": "Minor",
+      "ChangelogMessages": [
+        "Update package references including AWS SDK for .NET version to V4"
+      ]
+    }
+  ]
+}