Remove bad example.

The variable $juice is not defined. The example doesn't make any sense.
Syntactically the interpolation would work had the correct variable name been
used. So I'm removing this portion of the example since it doesn't demonstrate
anything useful.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332340 c90b9560-bf6c-de11-be94-00142212c4b1