Remove unused resources

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

@@ -20,8 +20,6 @@
   <attr name="asSeparatorBackground" format="color"/>
   <attr name="asListDividerColor" format="color"/>
   <attr name="asThemeTextColor" format="color"/>
-  <attr name="asHeaderTextColor" format="color"/>
-  <attr name="asHeaderTextColorInverse" format="color"/>
   <attr name="asEditTextBackground" format="reference"/>
   <attr name="asAbBackgroundColor" format="color"/>
   <attr name="asQuickaddBackgroundColor" format="color" />

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

@@ -28,8 +28,6 @@
         <item name="asQuickaddBackgroundColor">?attr/asAbBackgroundColor</item>
         <item name="asFilterSelectedIcon">@drawable/filter_selected_icon</item>
         <item name="asTaskRowSelector">@drawable/task_row_bg_dark</item>
-        <item name="asHeaderTextColor">?attr/asThemeTextColor</item>
-        <item name="asHeaderTextColorInverse">?attr/asAbBackgroundColor</item>
         <item name="ic_action_new_attachment">@drawable/ic_action_new_attachment_light</item>
         <item name="ic_action_discard">@drawable/ic_action_discard_light</item>
         <item name="ic_action_save">@drawable/ic_action_save_light</item>