remove unused function

	lock_level      => Cache::File::LOCK_LOCAL(),

);

sub hash_password {

	my ($password) = @_;

	my @salt_bytes = map { int( rand(255) ) + 1 } ( 1 .. 16 );

	my $salt = en_base64( pack( 'C[16]', @salt_bytes ) );

	return bcrypt( $password, '$2a$12$' . $salt );

}

sub check_password {

	my ( $password, $hash ) = @_;