celox:Remove button overlays to fix compilation errors.

Change-Id: I3c27101d922da572e551a556654ceb790b89aa33
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 06cb25b..d174b1e 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -106,6 +106,6 @@
              8 - Assistant (search)
             16 - App switch
          For example, a device with Home, Back and Menu keys would set this
-         config to 7. -->
-    <integer name="config_deviceHardwareKeys">15</integer>
+         config to 7.
+    <integer name="config_deviceHardwareKeys">15</integer> -->
 </resources>