C#: Add change note

hvitved · hvitved · commit 7e33b571c96b · 2021-03-25T09:50:24.000+01:00
diff --git a/csharp/change-notes/2021-03-24-remove-legacy-queries.md b/csharp/change-notes/2021-03-24-remove-legacy-queries.md
@@ -0,0 +1,2 @@
+lgtm,codescanning
+* Legacy queries in the folders `external` and `filters` have all been removed.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+lgtm,codescanning`
	`2`	+* Legacy queries in the folders `external` and `filters` have all been removed.