Hide e-call button in layout.

Bug: 2568732
Change-Id: Idfccf04684bc7c717742cc06fa74df2c86ccea2d
diff --git a/core/res/res/layout/keyguard_screen_tab_unlock.xml b/core/res/res/layout/keyguard_screen_tab_unlock.xml
index 945d283..79ca617 100644
--- a/core/res/res/layout/keyguard_screen_tab_unlock.xml
+++ b/core/res/res/layout/keyguard_screen_tab_unlock.xml
@@ -164,6 +164,7 @@
         android:layout_marginBottom="80dip"
         style="@style/Widget.Button.Transparent"
         android:drawablePadding="8dip"
+        android:visibility="gone"
         />
 
 </RelativeLayout>
diff --git a/core/res/res/layout/keyguard_screen_tab_unlock_land.xml b/core/res/res/layout/keyguard_screen_tab_unlock_land.xml
index 6b76004e..8353887 100644
--- a/core/res/res/layout/keyguard_screen_tab_unlock_land.xml
+++ b/core/res/res/layout/keyguard_screen_tab_unlock_land.xml
@@ -163,6 +163,7 @@
         style="@style/Widget.Button.Transparent"
         android:drawablePadding="8dip"
         android:layout_marginRight="80dip"
+        android:visibility="gone"
         />
 
 </LinearLayout>