diff --git a/colab/accounts/auth.py b/colab/accounts/auth.py
index 7224b15..1a63968 100644
--- a/colab/accounts/auth.py
+++ b/colab/accounts/auth.py
@@ -1,5 +1,3 @@
-import re
-
 from django_browserid.auth import BrowserIDBackend, default_username_algo
 
 
diff --git a/colab/accounts/management/commands/delete_invalid.py b/colab/accounts/management/commands/delete_invalid.py
deleted file mode 100644
index 0335e98..0000000
--- a/colab/accounts/management/commands/delete_invalid.py
+++ /dev/null
@@ -1,42 +0,0 @@
-
-
-from django.db.models import F
-from django.utils import timezone
-from django.utils.translation import ugettext as _
-from django.core.management.base import BaseCommand, CommandError
-
-
-from ...models import User
-
-
-class Command(BaseCommand):
-    """Delete user accounts that have never logged in.
-
-    Delete from database user accounts that have never logged in
-    and are at least 24h older.
-
-    """
-
-    help = __doc__
-
-    def handle(self, *args, **kwargs):
-        seconds = timezone.timedelta(seconds=1)
-        now = timezone.now()
-        one_day_ago = timezone.timedelta(days=1)
-
-        # Query for users that have NEVER logged in
-        #
-        # By default django sets the last_login as auto_now and then
-        #   last_login is pretty much the same than date_joined
-        #   (instead of null as I expected). Because of that we query
-        #   for users which last_login is between date_joined - N and
-        #   date_joined + N, where N is a small constant in seconds.
-        users = User.objects.filter(last_login__gt=(F('date_joined') - seconds),
-                                    last_login__lt=(F('date_joined') + seconds),
-                                    date_joined__lt=now-one_day_ago)
-        count = 0
-        for user in users:
-            count += 1
-            user.delete()
-
-        print _(u'%(count)s users deleted.') % {'count': count}
diff --git a/colab/accounts/views.py b/colab/accounts/views.py
index 83d02e0..c6cbf84 100644
--- a/colab/accounts/views.py
+++ b/colab/accounts/views.py
@@ -167,8 +167,6 @@ def signup(request):
     mailman.update_subscription(user.email, mailing_lists)
 
     messages.success(request, _('Your profile has been created!'))
-    messages.warning(request, _('You must login to validated your profile. '
-                                'Profiles not validated are deleted in 24h.'))
 
     return redirect('user_profile', username=user.username)
 
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