settings: remove dead keys

fixes #2977

quickshell/Common/SettingsData.qml

@@ -659,9 +659,6 @@ Singleton {
     readonly property string iconTheme: resolveIconTheme()
     property var availableIconThemes: ["System Default"]
     property string systemDefaultIconTheme: ""
-    property bool qt5ctAvailable: false
-    property bool qt6ctAvailable: false
-    property bool gtkAvailable: false
 
     property var cursorSettings: ({
             "theme": "System Default",
@@ -798,8 +795,6 @@ Singleton {
     property int fadeToDpmsGracePeriod: 5
     property string launchPrefix: ""
 
-    property bool gtkThemingEnabled: false
-    property bool qtThemingEnabled: false
     property bool syncModeWithPortal: true
     property bool terminalsAlwaysDark: false
 
@@ -1685,7 +1680,6 @@ Singleton {
             _hasLoaded = true;
             applyStoredTheme();
             updateCompositorCursor();
-            Processes.detectQtTools();
             Qt.callLater(checkIconThemeDrift);
 
             _checkSettingsWritable();

quickshell/Common/Theme.qml

@@ -96,8 +96,6 @@ Singleton {
     }
 
     property bool matugenAvailable: false
-    property bool gtkThemingEnabled: typeof SettingsData !== "undefined" ? SettingsData.gtkAvailable : false
-    property bool qtThemingEnabled: typeof SettingsData !== "undefined" ? (SettingsData.qt5ctAvailable || SettingsData.qt6ctAvailable) : false
     property var workerRunning: false
     property var pendingThemeRequest: null
 

quickshell/Common/settings/Processes.qml

@@ -487,41 +487,10 @@ Singleton {
         return pamFprintDetected ? "probe_failed" : "missing_pam_support";
     }
 
-    // --- Qt tools detection ---
-
-    function detectQtTools() {
-        qtToolsDetectionProcess.running = true;
-    }
-
     function checkPluginSettings() {
         pluginSettingsCheckProcess.running = true;
     }
 
-    property var qtToolsDetectionProcess: Process {
-        command: ["sh", "-c", "echo -n 'qt5ct:'; command -v qt5ct >/dev/null && echo 'true' || echo 'false'; echo -n 'qt6ct:'; command -v qt6ct >/dev/null && echo 'true' || echo 'false'; echo -n 'gtk:'; (command -v gsettings >/dev/null || command -v dconf >/dev/null) && echo 'true' || echo 'false'"]
-        running: false
-
-        stdout: StdioCollector {
-            onStreamFinished: {
-                if (!settingsRoot)
-                    return;
-                if (text && text.trim()) {
-                    const lines = text.trim().split("\n");
-                    for (let i = 0; i < lines.length; i++) {
-                        const line = lines[i];
-                        if (line.startsWith("qt5ct:")) {
-                            settingsRoot.qt5ctAvailable = line.split(":")[1] === "true";
-                        } else if (line.startsWith("qt6ct:")) {
-                            settingsRoot.qt6ctAvailable = line.split(":")[1] === "true";
-                        } else if (line.startsWith("gtk:")) {
-                            settingsRoot.gtkAvailable = line.split(":")[1] === "true";
-                        }
-                    }
-                }
-            }
-        }
-    }
-
     Timer {
         id: authApplyDebounce
         interval: 300

quickshell/Common/settings/SettingsSpec.js

@@ -298,9 +298,6 @@ var SPEC = {
     lastAppliedIconTheme: { def: "" },
     availableIconThemes: { def: ["System Default"], persist: false },
     systemDefaultIconTheme: { def: "", persist: false },
-    qt5ctAvailable: { def: false, persist: false },
-    qt6ctAvailable: { def: false, persist: false },
-    gtkAvailable: { def: false, persist: false },
 
     cursorSettings: { def: { theme: "System Default", size: 24, niri: { hideWhenTyping: false, hideAfterInactiveMs: 0 }, hyprland: { hideOnKeyPress: false, hideOnTouch: false, inactiveTimeout: 0 }, dwl: { cursorHideTimeout: 0 }, mango: { cursorHideTimeout: 0 } }, onChange: "updateCompositorCursor" },
     availableCursorThemes: { def: ["System Default"], persist: false },
@@ -374,8 +371,6 @@ var SPEC = {
     fadeToDpmsGracePeriod: { def: 5 },
     launchPrefix: { def: "" },
 
-    gtkThemingEnabled: { def: false, onChange: "regenSystemThemes" },
-    qtThemingEnabled: { def: false, onChange: "regenSystemThemes" },
     syncModeWithPortal: { def: true },
     terminalsAlwaysDark: { def: false, onChange: "regenSystemThemes" },