JS: remove the logic for MAX_GENERATED_ENTITIES in ObjectSelector
JS: remove the logic for MAX_GENERATED_ENTITIES in ObjectSelector

This restriction is no longer needed because the Object Selector has been
modified to prevent updating while the model is running. It was the
frequent updating that caused the Object Selector to choke the UI thread
when there were a large number of entities to display.

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

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