Disabled for username

Hi, I’m looking for simple code to disabled re-set password request for only 1 username, but i cannot find anywhere exactly code. Can you help archive this code? I used your plugin and it work as i wanted. But my web is too much plugin, i want to less as less plugin can be.

The username i wanted to disabled password request is “jamesadmin”. I found the bellow code, but it did not work correct.

Hope to hear from you!

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class Password_Reset_Removed
{

function __construct()
{
add_filter( ‘show_password_fields’, array( $this, ‘disable’ ) );
add_filter( ‘allow_password_reset’, array( $this, ‘disable’ ) );
add_filter( ‘gettext’, array( $this, ‘remove’ ) );
}

function disable()
{
if ( is_admin() ) {
$userdata = wp_get_current_user();
$user = new WP_User($userdata->ID);
if ( !empty( $user->roles ) && $user->roles[0] == ‘administrator’ )
return true;
}
return false;
}

function remove($text)
{
return str_replace( array(‘Lost your password?’, ‘Lost your password’), ”, trim($text, ‘?’) );
}
}
$pass_reset_removed = new Password_Reset_Removed();