Remove tripleo_ovn_mac_port_name port tag

The tripleo_ovn_mac_port_name can become very
long in case a very long role name is used.
For example, the following role name triggered
the maximum length of 60 characters error:
  "DistributedComputeHCIScaleOut"

The tags are used for ideompetency in:
tripleo_ansible/ansible_plugins/modules/tripleo_ovn_mac_addresses.py

However the tripleo_ovn_mac_port_name tag is
not actually used.

Related Bug: #1921713

Change-Id: I5b6124210aec0c25ffa7daf82a9c6e944bdb4966

network/ports/ovn_mac_addr_port.yaml

@@ -33,10 +33,6 @@ resources:
       network: {get_param: OVNMacAddressNetworkName}
       fixed_ips: []
       tags:
-        - str_replace:
-            template: tripleo_ovn_mac_port_name=$PORT_NAME
-            params:
-              $PORT_NAME: {get_param: PortName}
         - str_replace:
             template: tripleo_ovn_mac_net=$NET_NAME
             params: