[8u] RFR: 8243474: [TESTBUG] removed three tests of 0 bytes

[Ao Qi]

Hi all,

This is a 8u-specific bug.
jdk/test/lib/testlibrary/jdk/testlibrary/IOUtils.java,
test/jdk/java/awt/FontClass/GlyphRotationTest.java and
test/jdk/java/awt/font/Rotate/RotatedFontMetricsTest.java were 0 bytes
and added into jdk8u by JDK-8237175, JDK-8225334 and JDK-8235559
respectively. The corresponding three tests were already backported
properly. I think we should remove these empty files.

JBS: https://bugs.openjdk.java.net/browse/JDK-8243474
webrev: http://cr.openjdk.java.net/~aoqi/8243474/webrev.00/

(Should I file three bugs or one?)

Thanks,
Ao Qi