Update remove image for Preferences.

Clocker/Overall App/Themer.swift

@@ -219,6 +219,18 @@ extension Themer {
                                      NSImage(named: NSImage.Name("WhiteSunset"))!)
     }
     
+    func remove() -> NSImage {
+        if let symbolImage = symbolImage(for: "xmark") {
+            return symbolImage
+        }
+        
+        return fallbackImageProvider(NSImage(named: NSImage.Name("Remove"))!,
+                                     NSImage(named: NSImage.Name("WhiteRemove"))!,
+                                     NSImage(named: NSImage.Name("Remove Dynamic"))!,
+                                     NSImage(named: NSImage.Name("Remove"))!,
+                                     NSImage(named: NSImage.Name("WhiteRemove"))!)
+    }
+    
     func removeImage() -> NSImage {
         if let symbolImage = symbolImage(for: "xmark.circle") {
             return symbolImage

Clocker/Preferences/General/PreferencesViewController.swift

@@ -134,7 +134,7 @@ class PreferencesViewController: ParentViewController {
     
     private func darkModeChanges() {
         addTimezoneButton.image = Themer.shared().addImage()
-        deleteButton.image = Themer.shared().removeImage()
+        deleteButton.image = Themer.shared().remove()
     }
     
     private func setupLocalizedText() {
@@ -259,7 +259,7 @@ class PreferencesViewController: ParentViewController {
         timezonePanel.contentView?.wantsLayer = true
         timezonePanel.contentView?.layer?.backgroundColor = Themer.shared().textBackgroundColor().cgColor
         addTimezoneButton.image = themer.addImage()
-        deleteButton.image = themer.removeImage()
+        deleteButton.image = themer.remove()
     }
     
     private func setupShortcutObserver() {