Update dmg-release.yml (#1296)
Update dmg-release.yml (#1296)

Summary:
The second publish job actually works, so let's remove the first one.
Pull Request resolved: https://github.com/facebook/flipper/pull/1296

Test Plan: https://github.com/facebook/flipper/runs/806859866?check_suite_focus=true

Reviewed By: jknoxville

Differential Revision: D22257369

Pulled By: passy

fbshipit-source-id: 72acc2e8ee10ad4514e315d57f4fa44656fce4e3

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper