Remove duplicate "xmlns" attr in admin samples

AppRestrictionEnforcer and BasicManagedProfile had duplicate xmlns
attributes in layout files, which was causing linter errors.

Bug: 19116172
Change-Id: I2c759f7e49fe61711285b0844b34f62c611d0b59
diff --git a/admin/AppRestrictionEnforcer/Application/src/main/res/layout/fragment_setup_profile.xml b/admin/AppRestrictionEnforcer/Application/src/main/res/layout/fragment_setup_profile.xml
index e9e9fe8..8fde91f 100644
--- a/admin/AppRestrictionEnforcer/Application/src/main/res/layout/fragment_setup_profile.xml
+++ b/admin/AppRestrictionEnforcer/Application/src/main/res/layout/fragment_setup_profile.xml
@@ -20,7 +20,7 @@
     android:layout_height="match_parent"
     tools:context="com.example.android.basicmanagedprofile.MainActivity.MainFragment">
 
-    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
diff --git a/admin/BasicManagedProfile/Application/src/main/res/layout/fragment_setup_profile.xml b/admin/BasicManagedProfile/Application/src/main/res/layout/fragment_setup_profile.xml
index 2aaaa93..6b1e0d3 100644
--- a/admin/BasicManagedProfile/Application/src/main/res/layout/fragment_setup_profile.xml
+++ b/admin/BasicManagedProfile/Application/src/main/res/layout/fragment_setup_profile.xml
@@ -20,7 +20,7 @@
     android:layout_height="match_parent"
     tools:context="com.example.android.basicmanagedprofile.MainActivity.MainFragment">
 
-    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"