Docs: Remove documentation for a phantom parameter not actually passed to the is_email filter.

The documentation error was introduced in [26485].

Props chrisvendiadvertisingcom.
Fixes #34097.


git-svn-id: https://develop.svn.wordpress.org/trunk@34770 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/formatting.php

@@ -2464,7 +2464,6 @@ function is_email( $email, $deprecated = false ) {
 		 *
 		 * @param bool   $is_email Whether the email address has passed the is_email() checks. Default false.
 		 * @param string $email    The email address being checked.
-		 * @param string $message  An explanatory message to the user.
 		 * @param string $context  Context under which the email was tested.
 		 */
 		return apply_filters( 'is_email', false, $email, 'email_too_short' );