cros: Remove set_issue_oauth_code_cookie in login_manager_test

Bug: 912704
Change-Id: I85386df408fb2a6365034dc65680ccef78553f02
Reviewed-on: https://chromium-review.googlesource.com/c/1376351
Commit-Queue: Jacob Dufault <jdufault@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#624956}
2 files changed