settings: Remove ABOUT_LINK_DISABLED.

Was introduced in 0f4bbc8, I think because the /team page was unfinished at
the time.

templates/zerver/footer.html

@@ -6,10 +6,7 @@
             <li><a href="/why-zulip/">{{ _("Why Zulip") }}</a></li>
             <li><a href="/features/">{{ _("Features") }}</a></li>
             <li><a href="/plans/">{{ _("Plans &amp; pricing") }}</a></li>
-            {% if about_link_disabled %}
-            {% else %}
             <li><a href="/team/">{{ _("Team") }}</a></li>
-            {% endif %}
         </ul>
     </section>
     <section>

zerver/context_processors.py

@@ -69,14 +69,12 @@ def zulip_default_context(request):
 
     register_link_disabled = settings.REGISTER_LINK_DISABLED
     login_link_disabled = settings.LOGIN_LINK_DISABLED
-    about_link_disabled = settings.ABOUT_LINK_DISABLED
     find_team_link_disabled = settings.FIND_TEAM_LINK_DISABLED
 
     if (settings.ROOT_DOMAIN_LANDING_PAGE
             and get_subdomain(request) == Realm.SUBDOMAIN_FOR_ROOT_DOMAIN):
         register_link_disabled = True
         login_link_disabled = True
-        about_link_disabled = True
         find_team_link_disabled = False
 
     apps_page_url = 'https://zulipchat.com/apps/'
@@ -106,7 +104,6 @@ def zulip_default_context(request):
         'custom_logo_url': settings.CUSTOM_LOGO_URL,
         'register_link_disabled': register_link_disabled,
         'login_link_disabled': login_link_disabled,
-        'about_link_disabled': about_link_disabled,
         'terms_of_service': settings.TERMS_OF_SERVICE,
         'privacy_policy': settings.PRIVACY_POLICY,
         'login_url': settings.HOME_NOT_LOGGED_IN,

zproject/settings.py

@@ -287,7 +287,6 @@ DEFAULT_SETTINGS.update({
     'EMAIL_DELIVERER_DISABLED': False,
     'REGISTER_LINK_DISABLED': None,
     'LOGIN_LINK_DISABLED': False,
-    'ABOUT_LINK_DISABLED': False,
     'FIND_TEAM_LINK_DISABLED': True,
 
     # What domains to treat like the root domain