Merge "Simplify doclava build.gradle" am: aee2105a3f am: 613c45cab4 am: 75fef46c05 am: 658f7aa0a4

Original change: https://android-review.googlesource.com/c/platform/external/doclava/+/1445755

Change-Id: Ia3e84a36bd3b837ab47b502f13013f7e6d529d5b