For #23921 - Remove unused attributes in attrs.xml

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

@@ -141,7 +141,6 @@
     <color name="prompt_login_edit_text_cursor_color_normal_theme">@color/photonViolet50</color>
     <color name="search_suggestion_indicator_icon_color_normal_theme">@color/photonGreen60</color>
     <color name="search_suggestion_indicator_icon_bookmark_color_normal_theme">@color/photonBlue40</color>
-    <color name="recently_used_share_theme">@color/photonDarkGrey10</color>
 
     <!-- Tab tray -->
     <color name="tab_tray_item_background_normal_theme">@color/photonDarkGrey80</color>

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

@@ -31,7 +31,6 @@
     <attr name="scrimEnd" format="reference"/>
     <attr name="toolbarDivider" format="reference"/>
     <attr name="preferenceSectionHeader" format="reference"/>
-    <attr name="recentlyUsedShareMenu" format="reference" />
 
     <!-- Color used in DefaultToolbarMenu for buttons placed at the end of menu items -->
     <attr name="menuItemButtonTintColor" format="reference"/>
@@ -43,7 +42,6 @@
     <attr name="privateBrowsingButtonBackground" format="reference" />
     <attr name="privateBrowsingButtonAccent" format="reference" />
     <attr name="fenixLogo" format="reference" />
-    <attr name="fenixSnackbarBackground" format="reference" />
     <attr name="toolbarStartGradient" format="reference"/>
     <attr name="toolbarCenterGradient" format="reference"/>
     <attr name="toolbarEndGradient" format="reference"/>

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

@@ -291,7 +291,6 @@
     <color name="prompt_login_edit_text_cursor_color_normal_theme">@color/photonInk20</color>
     <color name="search_suggestion_indicator_icon_color_normal_theme">@color/photonGreen70</color>
     <color name="search_suggestion_indicator_icon_bookmark_color_normal_theme">@color/photonBlue50</color>
-    <color name="recently_used_share_theme">@color/photonLightGrey30</color>
 
     <!-- Tab tray -->
     <color name="tab_tray_item_background_normal_theme">@color/photonLightGrey10</color>

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

@@ -85,7 +85,6 @@
         <item name="preferenceSectionHeader">@color/fx_mobile_text_color_accent</item>
         <item name="selectPromptHeaderTextColor">@color/fx_mobile_text_color_accent</item>
         <item name="menuItemButtonTintColor">@color/fx_mobile_text_color_accent</item>
-        <item name="recentlyUsedShareMenu">@color/recently_used_share_theme</item>
 
         <!-- Shared widget colors -->
         <item name="mozac_primary_text_color">@color/fx_mobile_text_color_primary</item>