More mono cleaning

src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs

@@ -82,9 +82,6 @@ namespace NzbDrone.Common.Http.Dispatchers
 
                 if (httpWebResponse == null)
                 {
-                    // Workaround for mono not closing connections properly in certain situations.
-                    AbortWebRequest(webRequest);
-
                     // The default messages for WebException on mono are pretty horrible.
                     if (e.Status == WebExceptionStatus.NameResolutionFailure)
                     {
@@ -242,36 +239,5 @@ namespace NzbDrone.Common.Http.Dispatchers
                 }
             }
         }
-
-        // Workaround for mono not closing connections properly on timeouts
-        private void AbortWebRequest(HttpWebRequest webRequest)
-        {
-            // First affected version was mono 5.16
-            if (OsInfo.IsNotWindows && _platformInfo.Version >= new Version(5, 16))
-            {
-                try
-                {
-                    var currentOperationInfo = webRequest.GetType().GetField("currentOperation", BindingFlags.NonPublic | BindingFlags.Instance);
-                    var currentOperation = currentOperationInfo.GetValue(webRequest);
-
-                    if (currentOperation != null)
-                    {
-                        var responseStreamInfo = currentOperation.GetType().GetField("responseStream", BindingFlags.NonPublic | BindingFlags.Instance);
-                        var responseStream = responseStreamInfo.GetValue(currentOperation) as Stream;
-
-                        // Note that responseStream will likely be null once mono fixes it.
-                        responseStream?.Dispose();
-                    }
-                }
-                catch (Exception ex)
-                {
-                    // This can fail randomly on future mono versions that have been changed/fixed. Log to sentry and ignore.
-                    _logger.Trace()
-                           .Exception(ex)
-                           .Message("Unable to dispose responseStream on mono {0}", _platformInfo.Version)
-                           .Write();
-                }
-            }
-        }
     }
 }