Issue #2084535 by sivaji: Remove incorrect line from file_copy docs

core/includes/file.inc

@@ -598,8 +598,6 @@ function file_valid_uri($uri) {
  * This is a powerful function that in many ways performs like an advanced
  * version of copy().
  * - Checks if $source and $destination are valid and readable/writable.
- * - Checks that $source is not equal to $destination; if they are an error
- *   is reported.
  * - If file already exists in $destination either the call will error out,
  *   replace the file or rename the file based on the $replace parameter.
  * - If the $source and $destination are equal, the behavior depends on the