device: DragonKeyboardFirmwareUpdater: Move this package to vendor/google/apps

This removes the DragonKeyboardFirmwareUpdater package. Moving the package from
device/google/dragon to vendor/google/apps resolves the PDK build failure caused
by the inclusion of unpresented internal sources.

Bug: 26069968
TEST=build

Change-Id: I9836113de72b4024ad1fcd526c6f519ca37c0eb1
Signed-off-by: Miao-chen Chou <mcchou@google.com>
98 files changed