Do not install rng-tools

Running rngd can slow down the boot in some situations. All current
arches in RHEL support better entropy gathering so this is no longer
needed.

Resolves: rhbz#2028720

80-rhel/runtime-install.tmpl

@@ -128,7 +128,6 @@ installpkg hdparm
 %if basearch not in ("arm", "armhfp"):
     installpkg libmlx4 rdma-core
 %endif
-installpkg rng-tools
 %if basearch in ("i386", "x86_64", "aarch64"):
 installpkg dmidecode
 %endif

80-rhel/runtime-postinstall.tmpl

@@ -28,10 +28,6 @@ symlink /lib/systemd/system/anaconda.target etc/systemd/system/default.target
 mkdir etc/systemd/system/local-fs.target.wants/
 symlink /lib/systemd/system/tmp.mount etc/systemd/system/local-fs.target.wants/tmp.mount
 
-## Start rngd
-mkdir etc/systemd/system/basic.target.wants/
-symlink /lib/systemd/system/rngd.service etc/systemd/system/basic.target.wants/rngd.service
-
 ## Disable unwanted systemd services
 systemctl disable systemd-readahead-collect.service \
                   systemd-readahead-replay.service \