title: Restore single stub in sandbox
body: <pre><code>sandbox = sinon.sandbox.create();
  
  sandbox.stub(db, 'query', () =&gt; {
      return Promise.resolve();
  });
  
  sandbox.stub(process, 'exit', () =&gt; { });
  </code></pre>
  
  <p><code>sandbox.restore();</code> removes all the stubs.</p>
  
  <p>I want to remove ONE stub so I can restub it. For example the <code>query</code> stub.</p>
  
  <p>Is this possible? I can't find any information on this.</p>