Remove unused import

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

weblate/trans/views/lock.py

@@ -19,7 +19,7 @@
 #
 
 from django.utils.translation import ugettext as _
-from django.http import HttpResponse, JsonResponse
+from django.http import JsonResponse
 from django.shortcuts import redirect
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required