Metalava, not Doclava, should be used to extract the metadata used in
devtools. The files created then need to be copied into the SDK.

Bug: 142480924
Test: m sdk
Change-Id: I7eb15341fde9520d51a696a6416a63e6c19c71f9
Merged-In: I7eb15341fde9520d51a696a6416a63e6c19c71f9