Remove unnecessary field (backport #3137)

[mergify]

Remove CiffDirectory::cc_. It's a raw pointer, so it's ownership is unclear. There also doesn't seem to be any reason to store it in the object.

---

This is an automatic backport of pull request #3137 done by Mergify.

[mergify]

Cherry-pick of db8b8c2 has failed:

On branch mergify/bp/0.28.x/pr-3137
Your branch is up to date with 'origin/0.28.x'.

You are currently cherry-picking commit db8b8c26.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   src/crwimage_int.hpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/crwimage_int.cpp

Cherry-pick of 03bdced has failed:

On branch mergify/bp/0.28.x/pr-3137
Your branch is ahead of 'origin/0.28.x' by 2 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 03bdced4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/crwimage_int.cpp

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[kmilos]

@kevinbackhouse @nehaljwani Any appetite for a 0.28.4 release?

[kevinbackhouse]

@kevinbackhouse @nehaljwani Any appetite for a 0.28.4 release?

Yes, I can help with that.