Drop becoming-an-infrastructure-team-member page

The page is obsolete and the feedback about it is to just remove it as
no longer relevant.

Fix #3218

Signed-off-by: Sandro Bonazzola <sandro.bonazzola@gmail.com>

Author: sandrobonazzola

source/community/becoming-an-infrastructure-team-member.md

@@ -98,8 +98,7 @@ If a fix for the CVE is available, update the traker issue accordingly.
 
 Our project infrastructure can always benefit from extra people, hardware and network bandwidth.
 First of all, consider [hosting a public mirror](/community/get-involved/repository-mirrors.html) of oVirt repositories.
-You can also [become an infra team member](/community/becoming-an-infrastructure-team-member.html) or
-[donate GitHub runners](https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners) to the project to improve our capacity and redundancy.
+You can also [donate GitHub runners](https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners) to the project to improve our capacity and redundancy.
 
 ## Supporters, Sponsors, and Providers
 

source/community/index.md

@@ -28,9 +28,6 @@ the tenets of open source and accepted professional standards of system administ
 The list of the maintainers of the Infrastructure project is maintained
 as GitHub oVirt Team: [@oVirt/Infrastructure](https://github.com/orgs/oVirt/teams/infrastructure)
 
-Read [Becoming an Infrastructure team member](/community/becoming-an-infrastructure-team-member.html) for details on joining this project.
-
-
 ### Decision process
 
 * The Infra team generally follows the principle that if it wasn't discussed on the [mailing list](https://lists.ovirt.org/hyperkitty/list/infra@ovirt.org/) it didn't really happen.