Generic Highlighter: Remove progress output

It's not too helpful and a long display name causing all the
other progress bars to adjust and look rather intrusive.

Change-Id: Ib90904368a621728b31125d1a997c3739f7341d5
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/texteditor/generichighlighter/manager.cpp

@@ -309,9 +309,6 @@ void Manager::registerMimeTypes()
             QtConcurrent::run(&ManagerProcessor::process, processor);
         connect(&m_registeringWatcher, SIGNAL(finished()), processor, SLOT(deleteLater()));
         m_registeringWatcher.setFuture(future);
-
-        ProgressManager::addTask(future, tr("Registering Highlighting Definitions"),
-                                 "TextEditor.Task.Register");
     } else {
         m_hasQueuedRegistration = true;
         m_registeringWatcher.cancel();