hg: openjfx/8u-dev/rt: Reverting accidental commit of ES2Backend.java

[david.hill at oracle.com]

Changeset: 4063b9d7d05c
Author:    ddhill
Date:      2014-12-19 12:01 -0500
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/4063b9d7d05c

Reverting accidental commit of ES2Backend.java

! buildSrc/src/main/java/com/sun/scenario/effect/compiler/backend/hw/ES2Backend.java