EGit and Untrack

I am struggling with untracking some files I have added to the index by mistake.
I didn't expect it is so easy to add a file to index and so difficult to remove it from there.

Related story.

My recent two commits were failed attempts to achieve only that!
Without the ability to remove files from index everything is going to complicate a lot.

It looks like the only way to remove these files is to:

• rename offending files
• commit
• rerename them back
• commit

(spossibly with updating .gitignore if needed)

If that is the only way - next two commits are going to do just that.