Revert "Redirect users to upload.wikimedia.org for direct links if okay."

Lots of issues surfaced from http://*.zero.* to https://... redirection (invalid cert).

This reverts commit b2b6d3f2257b9a5983d7eb6471db373e05311c49.

Change-Id: I582bf42a3ba1f7306286e332de16d1933526b53a
Merge "Revert "Redirect users to upload.wikimedia.org for direct links if okay.""