network: remove unnecessary shell scripts, these moved to firewall yet

salt/network/files/fix_dhcp.sh

-#!/bin/bash
-sed -i '/HWADDR=.*/d' /etc/sysconfig/network-scripts/ifcfg-vm
-sed -i -e \$aNM_CONTROLLED=\"no\" /etc/sysconfig/network-scripts/ifcfg-vm
-/bin/systemctl daemon-reload
-ifup vm
-systemctl restart firewall
-systemctl restart dhcpd
-exit 0
-

salt/network/files/fix_dhcp_Debian.conf

-# systemd service file extras added by CIRCLE Salt installer:
-# openvswitch and virtual network interface must be up before
-# dhcpd is started
-
-[Unit]
-After=openvswitch-switch.service
-[Service]
-ExecStartPre=-/sbin/ifup vm
-{# TODO: change 'vm' to pillar['fwdriver']['vm_if'] ? #}
-{# TODO: similar patch for firewall.service ? #}