Delete MTU value according to PROD-22734

Change-Id: Id79754109be7548c0c576d53a81d637d85740318
diff --git "a/\173\043 interfaces \043\175/single_contrail_dpdk_prv" "b/\173\043 interfaces \043\175/single_contrail_dpdk_prv"
index 6b56b69..f981ca2 100644
--- "a/\173\043 interfaces \043\175/single_contrail_dpdk_prv"
+++ "b/\173\043 interfaces \043\175/single_contrail_dpdk_prv"
@@ -9,7 +9,6 @@
               # {{ interfaces_role }}
               {%- for interface_name, interface in interfaces.items() %}
               vhost0:
-                mtu: 9000
                 address: ${_param:_esc}{_param:tenant_address}
                 netmask: ${_param:_esc}{_param:tenant_network_netmask}
                 enabled: true