Got rid of an obsolete setting

src/pretix/base/settings.py

@@ -11,10 +11,6 @@ from typing import Any, Callable, Dict, Optional, TypeVar, Union
 from versions.models import Versionable
 
 DEFAULTS = {
-    'user_mail_required': {
-        'default': 'False',
-        'type': bool
-    },
     'max_items_per_order': {
         'default': '10',
         'type': int

src/pretix/control/forms/event.py

@@ -119,11 +119,6 @@ class EventSettingsForm(SettingsForm):
         choices=settings.LANGUAGES,
         label=_("Default language"),
     )
-    user_mail_required = forms.BooleanField(
-        label=_("Require e-mail adresses"),
-        help_text=_("Require all customers to provide an e-mail address."),
-        required=False
-    )
     attendee_names_asked = forms.BooleanField(
         label=_("Ask for attendee names"),
         help_text=_("Ask for a name for all tickets which include admission to the event."),

src/pretix/control/templates/pretixcontrol/event/settings.html

@@ -39,7 +39,6 @@
             <legend>{% trans "Order process settings" %}</legend>
             {% bootstrap_field sform.reservation_time layout="horizontal" %}
             {% bootstrap_field sform.max_items_per_order layout="horizontal" %}
-            {% bootstrap_field sform.user_mail_required layout="horizontal" %}
             {% bootstrap_field sform.attendee_names_asked layout="horizontal" %}
             {% bootstrap_field sform.attendee_names_required layout="horizontal" %}
         </fieldset>