RFR: 8253029: [PPC64] Remove obsolete Power6 code

[John Paul Adrian Glaubitz]

On 9/10/20 9:59 PM, Martin Doerr wrote:
> The recent PPC64 platform files still contain code which is part of a Power6 optimization called Power6Scheduler.
> However, this functionality was never completely contributed so it was never usable in the OpenJDK. We should remove it
> since we're no longer optimizing for Power6.
I love that it has German comments in the code:

"// Schleife 1" ;-)

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
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