Fix code style

Frameworks/MQTTnet.NetStandard/Adapter/MqttChannelAdapter.cs

@@ -84,10 +84,7 @@ namespace MQTTnet.Adapter
 
                 }
 
-                if (cancellationToken.IsCancellationRequested)
-                {
-                    return;
-                }
+                
 
             });
         }

Frameworks/MQTTnet.NetStandard/Exceptions/MqttCommunicationTimedOutException.cs

@@ -4,7 +4,7 @@ namespace MQTTnet.Exceptions
 {
     public sealed class MqttCommunicationTimedOutException : MqttCommunicationException
     {
-        public MqttCommunicationTimedOutException() : base() { }
+        public MqttCommunicationTimedOutException() { }
         public MqttCommunicationTimedOutException(Exception innerException) : base(innerException) { }
 
     }