Fix old style edit text drawable display error.

[Problem]
LinearLayout5, RelativeLayout2 of ApiDemos has text input field
display error.

[Cause]
They use Holo theme although text input field use old style edit text
drawable as background.

[Solution]
Use default edit text without custom background for RelativeLayout2,
LinearLayout5 sample.

Change-Id: I102bf267119ba0903bd17e898b525af0aa2f0c5d
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
diff --git a/samples/ApiDemos/res/layout/linear_layout_5.xml b/samples/ApiDemos/res/layout/linear_layout_5.xml
index b5d45c0..a0ff63b 100644
--- a/samples/ApiDemos/res/layout/linear_layout_5.xml
+++ b/samples/ApiDemos/res/layout/linear_layout_5.xml
@@ -35,16 +35,10 @@
 
     <!--
         Followed by the EditText field...
-
-        Also give it a standard background (the "android:"
-        part in @android:drawable/editbox_background
-        means it is system resource rather than
-        an application resource.
     -->
     <EditText
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="@android:drawable/editbox_background"/>
+        android:layout_height="wrap_content"/>
 
     <!--
         Use a horizontal layout to hold the two buttons.
diff --git a/samples/ApiDemos/res/layout/relative_layout_2.xml b/samples/ApiDemos/res/layout/relative_layout_2.xml
index 083953a..87a5377 100644
--- a/samples/ApiDemos/res/layout/relative_layout_2.xml
+++ b/samples/ApiDemos/res/layout/relative_layout_2.xml
@@ -33,16 +33,11 @@
 
     <!--
         Put the EditText field under the TextView
-        Also give it a standard background (the "android:"
-        part in @android:drawable/editbox_background
-        means it is system resource rather than
-        an application resource.
     -->
     <EditText
         android:id="@+id/entry"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:background="@android:drawable/editbox_background"
         android:layout_below="@id/label"/>
 
     <!--