[fenix] For https://github.com/mozilla-mobile/fenix/issues/23260 - Remove @color/onboarding_card_background_end_gradient_normal_theme redirection

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

@@ -119,7 +119,6 @@
     <color name="sync_disconnected_icon_fill_normal_theme">#FFF36E</color>
     <color name="sync_disconnected_background_normal_theme">#5B5846</color>
     <color name="swipe_delete_background_normal_theme">@color/photonDarkGrey20</color>
-    <color name="onboarding_card_background_end_gradient_normal_theme">@color/photonViolet40</color>
     <color name="onboarding_illustration_selected_normal_theme">@color/accent_normal_theme</color>
     <color name="onboarding_illustration_deselected_normal_theme">#99FBFBFE</color>
     <color name="add_on_private_browsing_exterior_circle_background_normal_theme">@color/accent_normal_theme</color>

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

@@ -188,7 +188,6 @@
     <color name="sync_disconnected_icon_fill_normal_theme">@color/photonYellow70</color>
     <color name="sync_disconnected_background_normal_theme">#FFFDE2</color>
     <color name="swipe_delete_background_normal_theme">@color/photonLightGrey30</color>
-    <color name="onboarding_card_background_end_gradient_normal_theme">@color/photonViolet40</color>
     <color name="onboarding_illustration_selected_normal_theme">@color/photonViolet70</color>
     <color name="onboarding_illustration_deselected_normal_theme">#9915141A</color>
     <color name="add_on_private_browsing_exterior_circle_background_normal_theme">@color/photonViolet70</color>

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

@@ -72,7 +72,7 @@
         <item name="syncDisconnectedBackground">@color/sync_disconnected_background_normal_theme</item>
         <item name="swipeDeleteBackground">@color/swipe_delete_background_normal_theme</item>
         <item name="onboardingDarkGradientStartBackground">@color/photonViolet70</item>
-        <item name="onboardingDarkGradientEndBackground">@color/onboarding_card_background_end_gradient_normal_theme</item>
+        <item name="onboardingDarkGradientEndBackground">@color/photonViolet40</item>
         <item name="onboardingSelected">@color/onboarding_illustration_selected_normal_theme</item>
         <item name="onboardingDeselected">@color/onboarding_illustration_deselected_normal_theme</item>
         <item name="addOnPrivateBrowsingExteriorCircleBackground">@color/add_on_private_browsing_exterior_circle_background_normal_theme</item>