Remove unused import

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/accounts/templatetags/authnames.py

@@ -22,7 +22,6 @@ Provides user friendly names for social authentication methods.
 """
 from django import template
 from django.utils.safestring import mark_safe
-from django.utils.html import escape
 
 register = template.Library()