C#: Update test expected output.

Author: michaelnebel

csharp/ql/test/query-tests/API Abuse/NoDisposeCallOnLocalIDisposable/NoDisposeCallOnLocalIDisposable.expected

@@ -4,5 +4,4 @@
 | NoDisposeCallOnLocalIDisposable.cs:75:25:75:71 | call to method Create | Disposable 'XmlReader' is created but not disposed. |
 | NoDisposeCallOnLocalIDisposable.cs:75:42:75:64 | object creation of type StringReader | Disposable 'StringReader' is created but not disposed. |
 | NoDisposeCallOnLocalIDisposable.cs:80:38:80:67 | object creation of type StreamWriter | Disposable 'StreamWriter' is created but not disposed. |
-| NoDisposeCallOnLocalIDisposable.cs:93:18:93:36 | object creation of type Task | Disposable 'Task' is created but not disposed. |
 | NoDisposeCallOnLocalIDisposableBad.cs:8:22:8:56 | object creation of type FileStream | Disposable 'FileStream' is created but not disposed. |