code: def downgrade():
      """Drop RenderedTaskInstanceFields table"""
      op.drop_table(TABLE_NAME)
  
imports: from __future__ import annotations
  import sqlalchemy
  from alembic import op
  from sqlalchemy import text
  from airflow.migrations.db_types import StringID
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types