revert greeter clock keys

quickshell/Common/SettingsData.qml

@@ -314,12 +314,6 @@ Singleton {
     property bool greeterEnableFprint: false
     property bool greeterEnableU2f: false
     property string greeterWallpaperPath: ""
-    property bool greeterUse24HourClock: true
-    property bool greeterShowSeconds: false
-    property bool greeterPadHours12Hour: false
-    property string greeterLockDateFormat: ""
-    property string greeterFontFamily: ""
-    property string greeterWallpaperFillMode: ""
     property int mediaSize: 1
 
     property string appLauncherViewMode: "list"

quickshell/Common/settings/SettingsSpec.js

@@ -168,12 +168,6 @@ var SPEC = {
     greeterEnableFprint: { def: false },
     greeterEnableU2f: { def: false },
     greeterWallpaperPath: { def: "" },
-    greeterUse24HourClock: { def: true },
-    greeterShowSeconds: { def: false },
-    greeterPadHours12Hour: { def: false },
-    greeterLockDateFormat: { def: "" },
-    greeterFontFamily: { def: "" },
-    greeterWallpaperFillMode: { def: "" },
     mediaSize: { def: 1 },
 
     appLauncherViewMode: { def: "list" },