RFR (S) 8216188: Remove expired flags in JDK 13

[Kim Barrett]

> On Jan 5, 2019, at 4:22 PM, David Holmes <david.holmes at oracle.com> wrote:
> 
> webrev: http://cr.openjdk.java.net/~dholmes/8216188/webrev/
> bug: https://bugs.openjdk.java.net/browse/JDK-8216188
> 
> This removes all the expired flags from the special_jvm_flags table, and updates a test.
> 
> Calvin: this includes IgnoreUnverifiableClassesDuringDump but I can just merge with your change in 8213002 if you push first. Or you can let me do it and close 8213002 as a dup.
> 
> Testing: tiers 1-3
> 
> Thanks,
> David

Looks good.