Get rid of duplicate status statement (#42885)

If a module was in status "preview", but it was not "supported"
(core/network) the message about the module being "preview" would be
repeated.

docs/templates/plugin.rst.j2

@@ -402,8 +402,6 @@ Support
 ~~~~~~~
 For more information about Red Hat's support of this @{ plugin_type }@,
 please refer to this `Knowledge Base article <https://access.redhat.com/articles/rhel-top-support-policies/>`_
-{%     else %}
-This @{ plugin_type }@ is flagged as **preview** which means that @{module_states['preview']}@.
 {%     endif %}
 
 {%   endif %}