Delete unused expanded search text size.

Change-Id: I1767ea30bfe6ad7642d788245a57b351aec6f1e6
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 18f0694..86604ed 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -93,7 +93,6 @@
     <!-- Margin below the search box. -->
     <dimen name="search_bottom_margin">8dp</dimen>
     <dimen name="search_collapsed_text_size">14sp</dimen>
-    <dimen name="search_expanded_text_size">20sp</dimen>
     <!-- Search box interior padding - left -->
     <dimen name="search_box_left_padding">8dp</dimen>
     <!-- Search box interior padding - right -->