Commit d5004a380294e05963d4de39007f3336e975fb0f introduced the package
"redhat-rpm-config" to make the Fedora 21 gate job running again.
As we dropped the F21 support in December 2015 with
commit 90bc5867728aafb66b374ae6e6a93318303dcff0 we don't need
this package anymore.
Change-Id: I71b969b7fd6651082451f6c4fd1e01d205771a11