Revert "Fix /var/run for centos lxc containers"

This reverts commit 018aeb4c34f70cb244f7633923828b6ececfb1a2.

Now that this has been resolved upstream, this needs to be reverted as it's causing CentOS builds to fail.

Change-Id: I55371b7eb3c5276e4d13927544c2e1d49d487753

vars/redhat-7.yml

@@ -53,13 +53,6 @@ lxc_cache_map:
     if [ -a /etc/resolv.conf ]; then
       mv /etc/resolv.conf /etc/resolv.conf.org
     fi
-    # TODO(mgariepy)
-    # Remove this once https://github.com/lxc/lxc/pull/1286 has merged.
-    if [ -d /var/run/ ]; then
-      mv /var/run/* /run/
-      rmdir /var/run
-      ln -sf ../run /var/run
-    fi
     echo "nameserver {{ lxc_net_address }}" > /etc/resolv.conf
     yum install -y {{ lxc_cache_distro_packages | join(' ') }}
     rm -f /usr/bin/python