Remove dead code

The active summary plugins are saved in the ActiveSummaries key

The config key used by isPluginEnabled is never set so it will always be true, making this code dead

src/kontactplugin/summary/kcmkontactsummary.cpp

@@ -117,13 +117,6 @@ void KCMKontactSummary::load()
 
     KPluginInfo::List pluginList = KPluginInfo::fromMetaData(pluginMetaDatas);
     for (auto plugin : std::as_const(pluginList)) {
-        plugin.setConfig(KConfigGroup(&config, "Plugins"));
-        plugin.load();
-
-        if (!plugin.isPluginEnabled()) {
-            continue;
-        }
-
         QVariant var = plugin.property(QStringLiteral("X-KDE-KontactPluginHasSummary"));
         if (var.isValid() && var.toBool() == true) {
             auto item = new PluginItem(plugin, mPluginView);