Please delete old releases from mirroring system

To reduce the load on the ASF mirrors, projects are required to delete old releases [1]

Please can you remove all non-current releases?
Thanks!
[Note that older releases are always available from the ASF archive server]

Any links to older releases on download pages should first be adjusted to point to the archive server.

[1] http://www.apache.org/dev/release.html#when-to-archive