RFR (S): 8183575: Runtime1::oop_arraycopy is unused and should be removed

[Erik Österlund]

Hi,

I noticed that Runtime1::oop_arraycopy is not referenced from anywhere 
in the code. So therefore I would like to remove it and its 
corresponding Runtime1::_oop_arraycopy_cnt counter.

Bug:
https://bugs.openjdk.java.net/browse/JDK-8183575

Webrev:
http://cr.openjdk.java.net/~eosterlund/8183575/webrev.00/

Testing: JPRT with hotspot tests.

Thanks,
/Erik