Remove logs about unrecognized service protocol object types (#6278)

packages/flutter/lib/src/services/keyboard.dart

@@ -95,6 +95,7 @@ class KeyboardHandle {
     if (_attached) {
       assert(_keyboard._currentHandle == this);
       _attached = false;
+      //_keyboard.service.clearClient();
       _keyboard._currentHandle = null;
       _keyboard._scheduleHide();
     }

packages/flutter_tools/lib/src/vmservice.dart

@@ -190,8 +190,6 @@ abstract class ServiceObject {
       case 'Isolate':
         serviceObject = new Isolate._empty(owner.vm);
       break;
-      default:
-        printTrace("Unsupported service object type: $type");
     }
     if (serviceObject == null) {
       // If we don't have a model object for this service object type, as a