RFR: 8223066: "jfr metadata" output the @Name annotation twice.

[Chihiro Ito]

Hi,

I fixed an issue that the @Name annotation was printed twice as 
followings in "jfr metadata" output.

@Name("jdk.ActiveSetting")
@Name("jdk.ActiveSetting")
@Label("Recording Setting")
@Category("Flight Recorder")
class ActiveSetting extends jdk.jfr.Event {


Could you reveiew this please?

webrev:
http://cr.openjdk.java.net/~cito/JDK-8223066/webrev.00/ 
<http://cr.openjdk.java.net/%7Ecito/JDK-8223066/webrev.00/>

Bug:
https://bugs.openjdk.java.net/browse/JDK-8223066

I have passed all the tests in test-tier1.

Best regards,
Chihiro