kuiserver: remove manual override for debug output

kuiserver/main.cpp

@@ -33,8 +33,6 @@ Q_LOGGING_CATEGORY(KUISERVER, "kuiserver")
 
 extern "C" Q_DECL_EXPORT int kdemain(int argc, char **argv)
 {
-    QLoggingCategory::setFilterRules(QStringLiteral("kuiserver.debug = true"));
-
     QApplication app(argc, argv);
     app.setApplicationName(QStringLiteral("kuiserver"));
     app.setApplicationVersion(QStringLiteral("2.0"));