fixed bug in removal of goals, facts, and objects
fixed bug in removal of goals, facts, and objects

KCL-Planning/ROSPlan,m312z/ROSPlan,m312z/ROSPlan,KCL-Planning/ROSPlan,m312z/ROSPlan,KCL-Planning/ROSPlan,KCL-Planning/ROSPlan,m312z/ROSPlan,m312z/ROSPlan