Remove extra install of release pkgs in fedora-minimal

I'm not sure why we try to do an extra install of these, it is done
inside the chroot in _install_repos.  Currently it just gets skipped
saying the packages are already installed.

Change-Id: Ic7aa8cbe13e4347b447e84bb9c12483a4e125228

elements/yum-minimal/root.d/08-yum-chroot

@@ -121,9 +121,6 @@ else
     fi
 
     # bootstrap the environment within the chroot
-    sudo chroot $TARGET_ROOT ${YUM} -y --releasever=$DIB_RELEASE \
-        --setopt=cachedir=/tmp/yum/$ARCH/$DIB_RELEASE \
-        install $RELEASE_RPMS
     sudo chroot $TARGET_ROOT ${YUM} makecache
     sudo chroot $TARGET_ROOT ${YUM} -y \
         --setopt=cachedir=/tmp/yum/$ARCH/$DIB_RELEASE \