remove short-syntax finder delegation

There's a significant risk of creating ambiguity whereby `Table->foo()` means any of:

    $Table->foo(); // implemented on the table class, expected, but is probably not a finder
    $Table->find('foo'); // table finder, expected
    $Behavior->find('foo'); // behavior finder, expected
    $Behavior->foo(); // implemented on a loaded behavior, UNexpected

While it would be convenient most of the time, it creates the following possibility:

    $Table->foo()->bar()->zum();
    $Table->addBehavior('Something'); (a behavior implementing function foo)
    $Table->foo()->bar()->zum();
    Fatal Error call to method bar on a none object/not-a-query object

Whereas this does not:

    $Table->find('foo')->bar()->zum();
    $Table->addBehavior('Something'); (a behavior implementing function foo)
    $Table->find('foo')->bar()->zum();

Therefore it's best IMO to nip this in the bud and remove this feature.