SponsorLink code should be checked as regular code

No need to set it as generated code, since we now build and test in CI too, so we ensure we never add unformatted code according to our own editorconfig. Sync'ing the editorconfig would necessarily also sync any format changes.

.editorconfig

@@ -107,6 +107,3 @@ dotnet_analyzer_diagnostic.category-Style.severity = none
 
 # VSTHRD200: Use "Async" suffix for async methods
 dotnet_diagnostic.VSTHRD200.severity = none
-
-[**/*SponsorLink*/**]
-generated_code = true