Calling parent constructor with props for react states

Question

    class Example extends React.Component {
      constructor(props) {
        super(props);
        this.state = {count: 0};
      }
     ....
   }

In the code above:

Why do we have to call both the constructor and super with props to use the state property ? Because i may not use this.props in the constructor of the inherited component. Just the state initialization.