remove precompiled_letter permission from the database

migrations/versions/0289_precompiled_for_all.py

@@ -0,0 +1,40 @@
+"""
+
+Revision ID: 0289_precompiled_for_all
+Revises: 0288_add_go_live_user
+Create Date: 2019-05-13 10:44:51.867661
+
+"""
+from alembic import op
+
+
+revision = '0289_precompiled_for_all'
+down_revision = '0288_add_go_live_user'
+
+
+def upgrade():
+    op.execute("DELETE from service_permissions where permission = 'precompiled_letter'")
+    op.execute("DELETE from service_permission_types where name = 'precompiled_letter'")
+
+
+def downgrade():
+    op.execute("INSERT INTO service_permission_types values('precompiled_letter')")
+    op.execute("""
+           INSERT INTO
+               service_permissions (service_id, permission, created_at)
+           SELECT
+               id, '{permission}', now()
+           FROM
+               services
+           WHERE
+               NOT EXISTS (
+                   SELECT
+                   FROM
+                       service_permissions
+                   WHERE
+                       service_id = services.id and
+                       permission = '{permission}'
+               )
+       """.format(
+        permission='precompiled_letter'
+    ))