Удаление изображения из массива формы

$(document).ready(function() { 
    if (window.File && window.FileList && window.FileReader) { 
      $("#files").on("change", function(e) { 
          var files = e.target.files, 
            filesLength = files.length; 
          for (var i = 0; i < filesLength; i++) { 
            var f = files[i] 
            var fileReader = new FileReader(); 
            fileReader.onload = (function(e) { 
              var file = e.target; 
              $("<span class=\"pip\">" + 
                "<img class=\"imageThumb\" src=\"" + e.target.result + "\" title=\"" + file.name + "\"/>" + 
                "<br/><span class=\"remove\">Remove image</span>" + 
                "</span>").insertAfter("#files"); 
 
 
          }); fileReader.readAsDataURL(f); 
      } 
    }); 
} 
else { 
  alert("Your browser doesn't support to File API") 
} 
$('body').on("click", ".remove", function() { 
var filestoupload = []; 
 
index = $(this).index(); 
console.log('удаляем файл: ', index) 
filestoupload.splice(index, 1); 
$(this).parent().remove(); 
$("#files").val(""); 
console.log('files to upload: ', filestoupload.length); 
}); 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
<input type="file" id="files" name="files[]" multiple/>