Remove unused native method
Remove unused native method

depends on external/webkit change: https://android-git.corp.google.com/g/#/c/190468/

bug:6486310
Change-Id: Id1c1eabf27135c73e45a489ab4c7cfa26e0c9def

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base