Remove adjust-interface-mtus script

- dhcp-match is already managed in Neutron since https://review.openstack.org/#/c/172040/
- MTU option shouldn't be managed by TripleO Quickstart.

Change-Id: I68701b45801c9c25f2a60d1a4afc51955a84c546

roles/baremetal-prep-overcloud/tasks/adjust-mtu-dnsmasq-ironic.yml

@@ -1,15 +0,0 @@
----
-
-- name: Copy over adjust interface mtus script template
-  template:
-    src: adjust-interface-mtus.sh.j2
-    dest: "{{ working_dir }}/adjust-interface-mtus.sh"
-    mode: 0755
-
-- name: Adjust MTU values and modify dnsmasq-ironic.conf
-  become: yes
-  shell: >
-    "{{ working_dir }}"/adjust-interface-mtus.sh
-  when: step_adjust_mtu|bool
-
-

roles/baremetal-prep-overcloud/tasks/main.yml

@@ -1,6 +1,4 @@
 ---
-- include: adjust-mtu-dnsmasq-ironic.yml
-
 - include: allow-traffic-for-controller.yml
 
 - include: install-upstream-ipxe.yml

roles/baremetal-prep-overcloud/templates/adjust-interface-mtus.sh.j2

@@ -1,25 +0,0 @@
-#!/bin/bash
-
-set -eux
-
-### --start_docs
-
-## Adjust interface MTU valuesfor undercloud and overcloud
-## =======================================================
-
-## * Adjust interface mtus
-## ::
-
-{% for interface in (mtu_interface) %}
-    ip link set {{ interface }} mtu {{ mtu }}
-    echo "MTU={{ mtu }}" >> /etc/sysconfig/network-scripts/ifcfg-{{ interface }}
-{% endfor %}
-
-## * Modify dnsmasq-ironic.conf
-## ::
-
-echo -e "\ndhcp-option-force=26,{{ mtu }}" >> /etc/dnsmasq-ironic.conf
-systemctl restart 'neutron-*'
-systemctl restart openstack-ironic-conductor
-
-### --stop_docs