[Meta] Remove updates added up until 10.3.0 from Drupal 11

For when to actually do this, probably something like this:

1. Deprecate modules on 10.x (actually happening as of this week!)
2. Remove deprecated modules and old updates from database dumps and update tests etc. on the 11.x branch, in a single issue if we can. That can probably be this issue.
3. Actually remove the deprecated modules from 11.x

With 1.5 figuring out when it's safe to do #2 so we don't have to do it more than once, just have to pick some kind of cut-off point where we don't expect to add new update hooks, or we commit to leaving those update hooks in the 11.x branch.

Doing issue management.

After removal of help topics module 2 post-updates probably will remain 📌 Remove deprecated help_topics module Needs review

This got done in 📌 Remove all the pre-10.3.x updates hooks Active .