Removed testing code that accidentally got committed

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

@@ -5,8 +5,6 @@
         <item name="colorPrimary">@color/material_indigo_500</item>
         <item name="colorPrimaryDark">@color/material_indigo_600</item>
         <item name="colorAccent">@color/material_pink_500</item>
-
-        <item name="md_content_color">#0099cc</item>
     </style>
 
 </resources>