hg: openjfx/8/graphics/rt: RT-26980: Perform checking only when assertions are enabled (TODO cleanup)

[hang.vo at oracle.com]

Changeset: ce5a7c88d8dc
Author:    rbair
Date:      2013-08-15 11:02 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/ce5a7c88d8dc

RT-26980: Perform checking only when assertions are enabled (TODO cleanup)

Summary: Actually, the TODO is old and just needed to be removed.

! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGGroup.java