remove accidentally-duplicated test

Author: analogrelay

test/Microsoft.AspNetCore.SignalR.Client.Tests/HttpConnectionTests.cs

@@ -1200,32 +1200,5 @@ public async Task CorrectlyHandlesQueryStringWhenAppendingNegotiateToUrl(string
             await connection.StartAsync().OrTimeout();
             await connection.DisposeAsync().OrTimeout();
         }
-
-        [Fact]
-        public async Task AbortAsyncTriggersClosedWithProvidedException()
-        {
-            var mockHttpHandler = new Mock<HttpMessageHandler>();
-            mockHttpHandler.Protected()
-                .Setup<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
-                .Returns<HttpRequestMessage, CancellationToken>(async (request, cancellationToken) =>
-                {
-                    await Task.Yield();
-                    return ResponseUtils.IsNegotiateRequest(request)
-                        ? ResponseUtils.CreateResponse(HttpStatusCode.OK, ResponseUtils.CreateNegotiationResponse())
-                        : ResponseUtils.CreateResponse(HttpStatusCode.OK);
-                });
-
-            var connection = new HttpConnection(new Uri("http://fakeuri.org"), TransportType.LongPolling, loggerFactory: null,
-                httpOptions: new HttpOptions { HttpMessageHandler = mockHttpHandler.Object });
-
-            var closeTcs = new TaskCompletionSource<Exception>();
-            connection.Closed += ex => closeTcs.TrySetResult(ex);
-
-            await connection.StartAsync().OrTimeout();
-
-            var exception = new Exception("Whoops!");
-            await connection.AbortAsync(exception).OrTimeout();
-            Assert.Same(exception, await closeTcs.Task.OrTimeout());
-        }
     }
 }