Revert D22360735: .circleci: Build docker images as part of CI workflow
Test Plan: revert-hammer
Differential Revision:
D22360735 (https://github.com/pytorch/pytorch/commit/af5bcba217646c52137b0c1feef036de6827ca85)
Original commit changeset: 4ffbde563fdc
fbshipit-source-id: 4ae2288f466703754c9e329d34d344269c70db83
