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+%22%22%22Wipe TAS lookups: one-off data migration to delete existing TASLookups%0A%0ARevision ID: a7249e2d8a1a%0ARevises: 0c857b50962a%0ACreate Date: 2016-10-18 19:58:19.837713%0A%0A%22%22%22%0Afrom alembic import op%0A%0A# revision identifiers, used by Alembic.%0Arevision = 'a7249e2d8a1a'%0Adown_revision = '0c857b50962a'%0Abranch_labels = None%0Adepends_on = None%0A%0A%0Adef upgrade(engine_name):%0A    globals()%5B%22upgrade_%25s%22 %25 engine_name%5D()%0A%0A%0Adef downgrade(engine_name):%0A    globals()%5B%22downgrade_%25s%22 %25 engine_name%5D()%0A%0A%0Adef upgrade_data_broker():%0A    op.execute('DELETE FROM tas_lookup')%0A%0A%0Adef downgrade_data_broker():%0A    pass%0A

Add data migration for removing TAS entries