hg: openjfx/8u-dev/rt: Disable failing tests after fix for RT-38012.

[leif.samuelsson at oracle.com]

Changeset: 46ba065ec37e
Author:    leifs
Date:      2014-08-13 14:31 -0700
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/46ba065ec37e

Disable failing tests after fix for RT-38012.

! modules/base/src/test/java/javafx/util/converter/DateStringConverterTest.java
! modules/base/src/test/java/javafx/util/converter/DateTimeStringConverterTest.java