[OpenJDK 2D-Dev] RFR: 8162432: Clean up references in font code to old Solaris releases.

[Phil Race]

https://bugs.openjdk.java.net/browse/JDK-8162432
http://cr.openjdk.java.net/~prr/8162432/

There's no need for the isSolaris8/9 or isOpenSolaris variables any more.

-phil.