Fix divider color in AMOLED mode (fixes #5778)

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

@@ -16,7 +16,6 @@
         <!-- Theme Colors -->
         <item name="colorSurface">@color/surface_amoled</item>
         <item name="android:colorBackground">@color/background_amoled</item>
-        <item name="android:divider">@color/divider_amoled</item>
 
         <!-- Custom Attributes-->
         <item name="colorFilterActive">@color/filter_dark</item>

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

@@ -68,7 +68,6 @@
     <color name="ripple_colored_yotsuba">#1FFC8C5C</color>
 
     <!-- AMOLED Mode -->
-    <color name="divider_amoled">@android:color/transparent</color>
     <color name="surface_amoled">#000001</color>
     <color name="background_amoled">#000000</color>