code: def downgrade():
      """Unapply Add index on state, dag_id for queued ``dagrun``"""
      with op.batch_alter_table("dag_run") as batch_op:
          batch_op.drop_index("idx_dag_run_queued_dags")
  
imports: from __future__ import annotations
  from alembic import op
  from sqlalchemy import text
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types