remove broadcast-related code, except migrations

app/utils.py

@@ -3,7 +3,6 @@ from datetime import datetime, timedelta
 import pytz
 from flask import url_for
 from notifications_utils.template import (
-    BroadcastMessageTemplate,
     HTMLEmailTemplate,
     LetterPrintTemplate,
     SMSMessageTemplate,
@@ -48,12 +47,11 @@ def url_with_token(data, url, config, base_url=None):
 
 
 def get_template_instance(template, values):
-    from app.models import BROADCAST_TYPE, EMAIL_TYPE, LETTER_TYPE, SMS_TYPE
+    from app.models import EMAIL_TYPE, LETTER_TYPE, SMS_TYPE
     return {
         SMS_TYPE: SMSMessageTemplate,
         EMAIL_TYPE: HTMLEmailTemplate,
         LETTER_TYPE: LetterPrintTemplate,
-        BROADCAST_TYPE: BroadcastMessageTemplate,
     }[template['template_type']](template, values)
 
 
@@ -90,7 +88,6 @@ def get_london_month_from_utc_column(column):
 
 def get_public_notify_type_text(notify_type, plural=False):
     from app.models import (
-        BROADCAST_TYPE,
         PRECOMPILED_LETTER,
         SMS_TYPE,
         UPLOAD_DOCUMENT,
@@ -102,9 +99,7 @@ def get_public_notify_type_text(notify_type, plural=False):
         notify_type_text = 'document'
     elif notify_type == PRECOMPILED_LETTER:
         notify_type_text = 'precompiled letter'
-    elif notify_type == BROADCAST_TYPE:
-        notify_type_text = 'broadcast message'
-
+    
     return '{}{}'.format(notify_type_text, 's' if plural else '')