remove unneeded sysctl changes in sysvinit-redhat init script

Docker-DCO-1.1-Signed-off-by: Adam Miller <admiller@redhat.com> (github: maxamillion)

contrib/init/sysvinit-redhat/docker

@@ -37,11 +37,6 @@ prestart() {
         service cgconfig start
     fi
 
-    preexec="/sbin/sysctl"
-    [ -x $preexec ] || exit 6
-    $preexec -w net.ipv4.ip_forward=1 > /dev/null 2>&1
-    $preexec -w net.ipv6.conf.all.forwarding=1 > /dev/null 2>&1
-
 }
 
 start() {