RFR(S): 8047368: Remove oracle.jrockit.jfr from open package.access list

[Erik Gahlin]

Hi,

Could I have a review of a small fix that removes references to jfr from 
the package.access list.

Bug:
https://bugs.openjdk.java.net/browse/JDK-8047368

Webrev:
http://cr.openjdk.java.net/~egahlin/8047368/

Thanks
Erik