RedHat changes to remove file system support

[sudoyang at gmail.com (Fong Vang)]

Anyone knows what RedHat did to remove support for other journaling
file systems such as XFS, ReiserFS, etc. (considering these are
supported by Fedora which is what RHEL is based on)?

Would it work to simply take the Anaconda code (or subsection of it)
and simply substitute that for the Anaconda code in RHEL/CentOS?