code: def downgrade():
      op.drop_column("tables", "normalize_columns")
  
file_path: superset/superset/migrations/versions/2023-08-14_09-38_9f4a086c2676_add_normalize_columns_to_sqla_model.py
imports: import sqlalchemy
  from alembic import op
  from sqlalchemy.ext.declarative import declarative_base
  from sqlalchemy.orm import Session
  from superset import db
  from superset.migrations.shared.utils import paginated_update
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types