Removed cancellation of error downgrading after closing, was causing read access violations.

communication/communication.cpp

@@ -168,6 +168,4 @@ void Communication::readTask() {
 			}
 		}
 	}
-
-	EventManager::GetInstance().cancelErrorDowngradingOnCurrentThread();
 }

communication/multichannelcommunication.cpp

@@ -129,5 +129,4 @@ void MultiChannelCommunication::readTask() {
 		}
 		
 	}
-	EventManager::GetInstance().cancelErrorDowngradingOnCurrentThread();
 }