Delete unused code

src/pretix/presale/forms/checkout.py

@@ -32,11 +32,8 @@
 # distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations under the License.
 
-from itertools import chain
-
 from django import forms
 from django.core.exceptions import ValidationError
-from django.utils.encoding import force_str
 from django.utils.formats import date_format
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
@@ -168,46 +165,6 @@ class QuestionsForm(BaseQuestionsForm):
             )
 
 
-class AddOnRadioSelect(forms.RadioSelect):
-    option_template_name = 'pretixpresale/forms/addon_choice_option.html'
-
-    def optgroups(self, name, value, attrs=None):
-        attrs = attrs or {}
-        groups = []
-        has_selected = False
-        for index, (option_value, option_label, option_desc) in enumerate(chain(self.choices)):
-            if option_value is None:
-                option_value = ''
-            if isinstance(option_label, (list, tuple)):
-                raise TypeError('Choice groups are not supported here')
-            group_name = None
-            subgroup = []
-            groups.append((group_name, subgroup, index))
-
-            selected = (
-                force_str(option_value) in value and
-                (has_selected is False or self.allow_multiple_selected)
-            )
-            if selected is True and has_selected is False:
-                has_selected = True
-            attrs['description'] = option_desc
-            subgroup.append(self.create_option(
-                name, option_value, option_label, selected, index,
-                subindex=None, attrs=attrs,
-            ))
-
-        return groups
-
-
-class AddOnVariationField(forms.ChoiceField):
-    def valid_value(self, value):
-        text_value = force_str(value)
-        for k, v, d in self.choices:
-            if value == k or text_value == force_str(k):
-                return True
-        return False
-
-
 class MembershipForm(forms.Form):
     required_css_class = 'required'