title: How to remove required attribute in MVC4, although that has been made required in model
body: <p>I am not able to do the same thing with string properties. In the below code, I want to remove the validation of the 'Last Name' and make it optional.</p>
  
  <pre><code>[Required(ErrorMessage = "Required")]    
  [Display(Name="Last Name")]
  public string LastName { get; set; }
  </code></pre>