[fenix] For https://github.com/mozilla-mobile/fenix/issues/23554 - Remove Top Sites border

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

@@ -155,7 +155,6 @@
 
     <!--Top site colors -->
     <color name="top_site_pin_icon_color">@color/photonLightGrey20</color>
-    <color name="top_sites_border_color">@color/photonDarkGrey90</color>
 
     <!-- Search Widget -->
     <color name="search_widget_background">@color/inset_normal_theme</color>

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

@@ -230,7 +230,6 @@
 
     <!-- Top site colors -->
     <color name="top_site_pin_icon_color">@color/photonDarkGrey80</color>
-    <color name="top_sites_border_color">@color/photonLightGrey30</color>
 
     <!-- Quick action buttons-->
     <color name="quick_action_reader_appearance_icon">#482166</color>

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

@@ -194,7 +194,6 @@
     <dimen name="top_sites_card_padding">12dp</dimen>
     <dimen name="top_sites_card_elevation">6dp</dimen>
     <dimen name="top_sites_card_radius">8dp</dimen>
-    <dimen name="top_sites_card_stroke_width">1dp</dimen>
 
     <!-- Credit Cards Fragment -->
     <dimen name="credit_cards_saved_cards_item_margin_start">16dp</dimen>

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

@@ -626,8 +626,6 @@
         <item name="cardBackgroundColor">?mozac_widget_favicon_background_color</item>
         <item name="cardCornerRadius">@dimen/top_sites_card_radius</item>
         <item name="cardElevation">@dimen/top_sites_card_elevation</item>
-        <item name="strokeColor">@color/top_sites_border_color</item>
-        <item name="strokeWidth">@dimen/top_sites_card_stroke_width</item>
     </style>
 
     <style name="topSiteFavicon">