RemoteLinux: Move the 'showWidget' value down the hierarchy

The in-between 'false' default value was reverted further down
twice and only used as such once.

Change-Id: I3017c1328a0fa036b0fb66d6955ee1b0585697f3
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/remotelinux/abstractremotelinuxdeploystep.cpp

@@ -110,11 +110,6 @@ void AbstractRemoteLinuxDeployStep::cancel()
     deployService()->stop();
 }
 
-BuildStepConfigWidget *AbstractRemoteLinuxDeployStep::createConfigWidget()
-{
-    return new BuildStepConfigWidget(this, false);
-}
-
 RemoteLinuxDeployConfiguration *AbstractRemoteLinuxDeployStep::deployConfiguration() const
 {
     return qobject_cast<RemoteLinuxDeployConfiguration *>(BuildStep::deployConfiguration());