Merge "Remove unused module dx-docs" am: 45364b9c55 am: ce1ffae499 am: 5d7d18dac3 am: 90cf56656b

Original change: https://android-review.googlesource.com/c/platform/dalvik/+/1838793

Change-Id: Id5ed39ca1236aeaec7151a1df4312e1fd72a8044