Why are there still "Carbon" framework files inside the Mac IDE?

Hasn’t support for Carbon been stopped recently? When I looked inside the 2015r2.1’s IDE’s Content/Resources folder, I found a lot of files with the name “Carbon” there.
Shouldn’t they get removed? That’s a lot of wasted space otherwise, it seems.

Badly named years and years ago but still useful
Certainly for Console apps & Web Edition