Remove Facebook OAuth e2e test as the feature has been deprecated
Deprecation issue: gitlab-org/gitlab#416000 (closed)
For reference, the issue where this test was added: gitlab-org/quality/testcases#3979 (closed)
Deprecation issue: gitlab-org/gitlab#416000 (closed)
For reference, the issue where this test was added: gitlab-org/quality/testcases#3979 (closed)