Revert D22118971: [android] gradle version update
Test Plan: revert-hammer
Differential Revision:
D22118971 (https://github.com/pytorch/pytorch/commit/262ad8e6abdc20f4ec9fc30b0b0299af94b314e6)
Original commit changeset: 566e45e8f6f7
fbshipit-source-id: 74cfec0c978b724d84460a6d0c98f97b389811f7
