Remove template tag room_link

Remove the now unused tag room_link and the function get_room_link which
is only used by this tag.

mpicms/base/templatetags/base_tags.py

@@ -5,9 +5,6 @@
 from django.utils.html import conditional_escape
 from django.utils.safestring import mark_safe
 
-from mpicms.base.utils import get_room_link
-
-
 register = template.Library()
 
 
@@ -21,11 +18,6 @@ def is_subscribed(page, user):
     return user in page.subscribers.all()
 
 
-@register.simple_tag
-def room_link(room):
-    return get_room_link(room)
-
-
 @register.filter
 def remove_i18n(url):
     if url.startswith('/en') or url.startswith('/de'):

mpicms/base/utils.py

@@ -3,8 +3,3 @@ def can_create(request, model):
     if request.user.is_staff or request.user.is_superuser:
         return True
     return not getattr(model, 'creation_limited', False)
-
-
-def get_room_link(room):
-    if room:
-        return 'https://twiki.molgen.mpg.de/foswiki/bin/room/' + room.split()[0]