Fixes #19610: FieldError when sorting Tunnel Termination on tenant

It turns out that the TunnelTermination model doesn't implement the
tenancy "protocol", in that there are no foreign keys to a tenant or
tenant group. It looks like TenancyColumnsMixin was added to
TunnelTerminationTable by mistake in completing #9816.

Author: jnovinger

netbox/vpn/tables/tunnels.py

@@ -73,7 +73,7 @@ class Meta(NetBoxTable.Meta):
         default_columns = ('pk', 'name', 'group', 'status', 'encapsulation', 'tenant', 'terminations_count')
 
 
-class TunnelTerminationTable(TenancyColumnsMixin, NetBoxTable):
+class TunnelTerminationTable(NetBoxTable):
     tunnel = tables.Column(
         verbose_name=_('Tunnel'),
         linkify=True