[fenix] For https://github.com/mozilla-mobile/fenix/issues/22800 - Remove unused tabTrayItemSelectedBackground attribute

app/src/main/res/values/attrs.xml

@@ -64,7 +64,6 @@
     <attr name="tabTrayThumbnailItemBackground" format="reference" />
     <attr name="tabTrayThumbnailIcon" format="reference" />
     <!-- Note - these are currently unused, but they are for if/when we add private UI to tabs tray -->
-    <attr name="tabTrayItemSelectedBackground" format="reference" />
     <attr name="tabTrayToolbarBackground" format="reference" />
 
     <!-- Tab History -->

app/src/main/res/values/colors.xml

@@ -164,7 +164,6 @@
     <color name="mozac_widget_favicon_border_private_theme">@color/photonInk50</color>
 
     <!-- Tab Tray -->
-    <color name="tab_tray_item_selected_background_private_theme">#422875</color>
     <color name="tab_tray_toolbar_background_private_theme">@color/photonInk50</color>
     <color name="tab_tray_item_media_background_private_theme">@color/photonViolet50</color>
 

app/src/main/res/values/styles.xml

@@ -90,7 +90,6 @@
         <item name="mozac_widget_favicon_background_color">@color/mozac_widget_favicon_background_normal_theme</item>
         <item name="mozac_widget_favicon_border_color">@color/mozac_widget_favicon_border_normal_theme</item>
 
-        <item name="tabTrayItemSelectedBackground">@color/tab_tray_item_selected_background_normal_theme</item>
         <item name="tabTrayToolbarBackground">@color/tab_tray_toolbar_background_normal_theme</item>
         <item name="tabTrayItemMediaBackground">@color/tab_tray_item_media_background_normal_theme</item>
         <item name="tabTrayHeadingIcon">@color/tab_tray_heading_icon_normal_theme</item>
@@ -275,7 +274,6 @@
         <item name="mozac_widget_favicon_border_color">@color/mozac_widget_favicon_border_private_theme</item>
 
         <!-- Tab Tray -->
-        <item name="tabTrayItemSelectedBackground">@color/tab_tray_item_selected_background_private_theme</item>
         <item name="tabTrayToolbarBackground">@color/tab_tray_toolbar_background_private_theme</item>
         <item name="tabTrayItemMediaBackground">@color/tab_tray_item_media_background_private_theme</item>
         <item name="tabTrayHeadingIcon">@color/tab_tray_heading_icon_dark_theme</item>