diff --git a/src/plasma/corona.cpp b/src/plasma/corona.cpp
--- a/src/plasma/corona.cpp
+++ b/src/plasma/corona.cpp
@@ -414,7 +414,6 @@
       containmentsStarting(0)
 {
     //TODO: make Package path configurable
-    KConfigGroup config(KSharedConfig::openConfig(), "General");
 
     if (QCoreApplication::instance()) {
         configName = QCoreApplication::instance()->applicationName() + QStringLiteral("-appletsrc");
diff --git a/src/plasma/dataengineconsumer.cpp b/src/plasma/dataengineconsumer.cpp
--- a/src/plasma/dataengineconsumer.cpp
+++ b/src/plasma/dataengineconsumer.cpp
@@ -38,11 +38,9 @@
 {
 #ifndef NDEBUG
     // qCDebug(LOG_PLASMA) << "engine ready!";
-#endif
     QString engineName = job->parameters().value(QStringLiteral("EngineName")).toString();
     QString location = job->destination();
     QPair<QString, QString> pair(location, engineName);
-#ifndef NDEBUG
     // qCDebug(LOG_PLASMA) << "pair = " << pair;
 #endif
 }
diff --git a/src/plasma/pluginloader.cpp b/src/plasma/pluginloader.cpp
--- a/src/plasma/pluginloader.cpp
+++ b/src/plasma/pluginloader.cpp
@@ -690,7 +690,6 @@
         const QString &parentApp)
 {
     KConfigGroup group(KSharedConfig::openConfig(), "General");
-    const QStringList excluded = group.readEntry("ExcludeCategories", QStringList());
     auto filter = [&type, &category, &parentApp](const KPluginMetaData &md) -> bool
     {
         if (!md.serviceTypes().contains(QStringLiteral("Plasma/Containment"))) {