.remove() that will remove an HTML element entirely
Remove element target4 from the page by using the .remove() function.
target4 element from your page.
    testString: assert($("#target4").length === 0 && code.match(/\$\(["']#target4["']\).remove\(\)/g));
  - text: Only use jQuery to remove this element.
    testString: assert(code.match(/id="target4/g) && !code.match(//g) && $("#right-well").length > 0);
```