Edit or Remove "Protected" and "Password Protected" from Post Titles

functions1.php

<?php

//* Remove "Private: " from Private Post Titles

function wpspeak_format_post_title($content) {
	return '%s';
}
add_filter('private_title_format', 'wpspeak_format_post_title');

functions2.php

<?php

//* Remove "Password Protected: " from Password Protected Post Titles

function wpspeak_title_format_post_title($content) {
	return '%s';
}
add_filter('protected_title_format', 'wpspeak_format_post_title');

functions3.php

<?php

//* Remove both "Private: " and "Password Protected: " from Post Titles

function wpspeak_title_format_post_title($content) {
	return '%s';
}
add_filter('private_title_format', 'wpspeak_format_post_title');
add_filter('protected_title_format', 'wpspeak_format_post_title');

functions4.php

<?php

//* Replace "Private: " from Private Post Titles

function wpspeak_format_post_title($content) {
	return 'Confidential: %s';
}
add_filter('private_title_format', 'wpspeak_format_post_title');

functions5.php

<?php

//* Replace "Password Protected: " from Password Protected Post Titles

function wpspeak_title_format_post_title($content) {
	return 'Confidential: %s';
}
add_filter('protected_title_format', 'wpspeak_format_post_title');