I try to access to pgdg-centos94-9.4-1 RPM file, but this file has been removed from yum.postgresql.org. I think that was removed last saturday or sunday.

https://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-centos94-9.4-1.noarch.rpm <== removed file

But when I go to https://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/, I can see these similar RPM:

...

pgdg-centos94-9.4-2.noarch.rpm 2015-Oct-21 08:52:11 5.2K application/x-redhat-package-manager

pgdg-centos94-9.4-3.noarch.rpm 2016-Sep-25 10:42:18 5.3K application/x-redhat-package-manager

...

I have two questions:

pgdg-centos94-9.4-1.noarch.rpm has been removed accidentally?
If previous questions is "not", what is yum.postgresql policy about retention period for rpm files?

Thanks a lot