Add missing abstract definition for delete_execution_plans
Add missing abstract definition for delete_execution_plans

dLobatog/dynflow,adamruzicka/dynflow,daviddavis/dynflow,dLobatog/dynflow,adamruzicka/dynflow,daviddavis/dynflow,daviddavis/dynflow,Dynflow/dynflow,dLobatog/dynflow,Dynflow/dynflow,Dynflow/dynflow,dLobatog/dynflow,adamruzicka/dynflow,daviddavis/dynflow,Dynflow/dynflow,adamruzicka/dynflow