Fix faulty dark/light mode switching in UnifiedSearchInputContainer

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>

src/gui/tray/UnifiedSearchInputContainer.qml

@@ -42,8 +42,6 @@ TextField {
 
     selectByMouse: true
 
-    palette.text: palette.midlight
-
     background: Rectangle {
         radius: 5
         border.color: parent.activeFocus ? UserModel.currentUser.accentColor : palette.dark