Remove question about which features people use

This is an optional question. We don’t really use the answer to it now
that we have some adoption of all these features.

app/main/forms.py

@@ -584,9 +584,6 @@ class RequestToGoLiveForm(StripWhitespaceForm):
         'Will the number of messages increase and when will that start?',
         validators=[DataRequired(message='Can’t be empty')]
     )
-    method_one_off = BooleanField('One at a time')
-    method_upload = BooleanField('Upload a spreadsheet of recipients')
-    method_api = BooleanField('Integrate with the GOV.UK Notify API')
 
 
 class ProviderForm(StripWhitespaceForm):