Drop "Configure Window Manager" entry in user actions menu

Because the kcm list has to be maintained manually, it's prone to get
outdated and incomplete (it already is!). On the other hand, "configure
window manager" is somewhat redundant as same kcms can be opened in
system settings.

src/useractions.cpp

@@ -185,24 +185,6 @@ void UserActionsMenu::helperDialog(const QString &message)
     KProcess::startDetached(QStringLiteral("kdialog"), args);
 }
 
-QStringList configModules(bool controlCenter)
-{
-    QStringList args;
-    args << QStringLiteral("kwindecoration");
-    if (controlCenter) {
-        args << QStringLiteral("kwinoptions");
-    } else if (KAuthorized::authorizeControlModule(QStringLiteral("kde-kwinoptions.desktop"))) {
-        args << QStringLiteral("kwinactions") << QStringLiteral("kwinfocus") << QStringLiteral("kwinmoving") << QStringLiteral("kwinadvanced")
-             << QStringLiteral("kwinrules") << QStringLiteral("kwincompositing") << QStringLiteral("kwineffects")
-#if KWIN_BUILD_TABBOX
-             << QStringLiteral("kwintabbox")
-#endif
-             << QStringLiteral("kwinscreenedges")
-             << QStringLiteral("kwinscripts");
-    }
-    return args;
-}
-
 void UserActionsMenu::init()
 {
     if (m_menu) {
@@ -286,34 +268,6 @@ void UserActionsMenu::init()
     action->setIcon(QIcon::fromTheme(QStringLiteral("preferences-system-windows-actions")));
     action->setData(Options::ApplicationRulesOp);
     m_applicationRulesOperation = action;
-    if (!kwinApp()->config()->isImmutable() && !KAuthorized::authorizeControlModules(configModules(true)).isEmpty()) {
-        advancedMenu->addSeparator();
-        action = advancedMenu->addAction(i18nc("Entry in context menu of window decoration to open the configuration module of KWin",
-                                               "Configure W&indow Manager..."));
-        action->setIcon(QIcon::fromTheme(QStringLiteral("configure")));
-        connect(action, &QAction::triggered, this, [this]() {
-            // opens the KWin configuration
-            QStringList args;
-            args << QStringLiteral("--icon") << QStringLiteral("preferences-system-windows");
-            const QString path = QStandardPaths::locate(QStandardPaths::GenericDataLocation,
-                                                        QStringLiteral("kservices5/kwinfocus.desktop"));
-            if (!path.isEmpty()) {
-                args << QStringLiteral("--desktopfile") << path;
-            }
-            args << configModules(false);
-            QProcess *p = new QProcess(this);
-            p->setArguments(args);
-            p->setProcessEnvironment(kwinApp()->processStartupEnvironment());
-            p->setProgram(QStringLiteral("kcmshell6"));
-            connect(p, static_cast<void (QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished), p, &QProcess::deleteLater);
-            connect(p, &QProcess::errorOccurred, this, [](QProcess::ProcessError e) {
-                if (e == QProcess::FailedToStart) {
-                    qCDebug(KWIN_CORE) << "Failed to start kcmshell6";
-                }
-            });
-            p->start();
-        });
-    }
 #endif
 
     m_maximizeOperation = m_menu->addAction(i18n("Ma&ximize"));