hg: jdk/sandbox: 8198717: Remove compute_optional_offset

[chris.hegarty at oracle.com]

Changeset: 3221f5e14866
Author:    coleenp
Date:      2018-09-19 15:25 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/3221f5e14866

8198717: Remove compute_optional_offset
Summary: remove optional_offset computation and related unused code from javaClasses for reflection.
Reviewed-by: redestad, lfoltan

! src/hotspot/share/classfile/javaClasses.cpp
! src/hotspot/share/classfile/javaClasses.hpp
! src/hotspot/share/runtime/reflection.cpp