remove broadcasts from migrations

migrations/versions/0336_broadcast_msg_content_2.py

@@ -11,30 +11,14 @@ from notifications_utils.template import BroadcastMessageTemplate
 from sqlalchemy.dialects import postgresql
 from sqlalchemy.orm.session import Session
 
-from app.models import BroadcastMessage
 
 revision = '0336_broadcast_msg_content_2'
 down_revision = '0335_broadcast_msg_content'
 
 
 def upgrade():
-
-    conn = op.get_bind()
-
-    results = conn.execute(sa.text("""
-        UPDATE
-            broadcast_message
-        SET
-            content = templates_history.content
-        FROM
-            templates_history
-        WHERE
-            broadcast_message.content is NULL and
-            broadcast_message.template_id = templates_history.id and
-            broadcast_message.template_version = templates_history.version
-        ;
-    """))
+    pass
 
 
 def downgrade():
-    op.alter_column('broadcast_message', 'content', nullable=True)
+    pass