Issue #2002714 by neochief: Fixed Remove unused local variables - core/includes/file.inc.

core/includes/file.inc

@@ -625,7 +625,6 @@ function file_valid_uri($uri) {
  */
 function file_unmanaged_copy($source, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
   $original_source = $source;
-  $original_destination = $destination;
 
   // Assert that the source file actually exists.
   if (!file_exists($source)) {