RFR: 8198957: Remove unused function ArgumentsExt::set_gc_specific_flags

[Thomas Schatzl]

Hi,

On Fri, 2018-03-02 at 16:53 +0100, Erik Helin wrote:
> Hi all,
> 
> this small patch removes the unused function 
> ArgumentsExt::set_gc_specific_flags.
> 
> Issue:
> https://bugs.openjdk.java.net/browse/JDK-8198957
> 
> Patch:
> http://cr.openjdk.java.net/~ehelin/8198957/00/
> 
> Testing:
> - make run-test-tier1 on Linux x86-64

  looks good.

Thomas