RFR: 8251463: Obsolete -XX:ForceNUMA option

[Albert Yang]

Hi,

I am not really sure about the change in `os_windows.cpp`. With 
`ForceNUMA` gone, it seems that NUMA will be completely disabled on Windows.

https://bugs.openjdk.java.net/browse/JDK-8251463
http://cr.openjdk.java.net/~ayang/webrevs/webrev/

Tested: tier1

-- 
/Albert