QmlDesigner: Fix "unused argument" compiler warnings

Change-Id: Ibfdd61069183a80b322674376200d92d11c06a41
Reviewed-by: Marco Bubke <marco.bubke@digia.com>

share/qtcreator/qml/qmlpuppet/commands/puppetalivecommand.cpp

@@ -35,17 +35,17 @@ PuppetAliveCommand::PuppetAliveCommand()
 {
 }
 
-QDataStream &operator<<(QDataStream &out, const PuppetAliveCommand &command)
+QDataStream &operator<<(QDataStream &out, const PuppetAliveCommand &/*command*/)
 {
     return out;
 }
 
-QDataStream &operator>>(QDataStream &in, PuppetAliveCommand &command)
+QDataStream &operator>>(QDataStream &in, PuppetAliveCommand &/*command*/)
 {
     return in;
 }
 
-QDebug operator <<(QDebug debug, const PuppetAliveCommand &command)
+QDebug operator <<(QDebug debug, const PuppetAliveCommand &/*command*/)
 {
     return debug.nospace() << "PuppetAliveCommand()";
 }