ADWLauncher overlay broke build, so remove it

Remove the overlay to (hopefully) fix this error:

device/samsung/dart/overlay/packages/apps/ADWLauncher/res/values/config.xml:18: error: Resource at config_uiLockAB appears in overlay but not in the base package; use <add-resource> to add.
make: *** [out/target/common/obj/APPS/ADWLauncher_intermediates/src/R.stamp] Err
or 1