*: remove "required by" auto-generated comments

These comments are not updated automatically and very hard to update manually,
so it's better not to have them.
5 jobs for version_required in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-Python3

04:47:19

running SlapOS.SoftwareReleases.IntegrationTest-Jerome-Python3

30897:02:35

running SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

30901:49:50

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-Python3

03:28:32

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

05:49:47