Replaced with slightly better version at solution level

UnitTests/.filenesting.json

@@ -1,15 +0,0 @@
-{
-  "help": "https://go.microsoft.com/fwlink/?linkid=866610",
-  "root": false,
-  "dependentFileProviders": {
-    "add": {
-      "pathSegment": {
-        "add": {
-          ".*": [
-            ".cs"
-          ]
-        }
-      }
-    }
-  }
-}