Drop service branding column

We’re not using this column any more, so let’s clean up after ourselves.

migrations/versions/0222_drop_service_branding.py

@@ -0,0 +1,23 @@
+"""
+ Revision ID: 0222_drop_service_branding
+Revises: 0221_nullable_service_branding
+Create Date: 2018-08-24 13:36:49.346156
+ """
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '0222_drop_service_branding'
+down_revision = '0221_nullable_service_branding'
+
+
+def upgrade():
+
+    op.drop_column('services_history', 'branding')
+    op.drop_column('services', 'branding')
+
+
+def downgrade():
+
+    op.add_column('services', sa.Column('branding', sa.String(length=255)))
+    op.add_column('services_history', sa.Column('branding', sa.String(length=255)))