hg: code-tools/jcstress: Remove obsolete Unsafe.fieldOffset() method.

[aleksey.shipilev at oracle.com]

Changeset: ca8b9d9c06b7
Author:    shade
Date:      2015-04-17 12:26 +0300
URL:       http://hg.openjdk.java.net/code-tools/jcstress/rev/ca8b9d9c06b7

Remove obsolete Unsafe.fieldOffset() method.

! jcstress-core/src/main/java/sun/misc/Unsafe.java
! tests-custom/src/main/java/org/openjdk/jcstress/tests/interrupt/UnsafeBusyLoopTest.java