hg: jigsaw/jake/hotspot: Remove unused _module_offset

[harold . seigel]

Changeset: fc6d7220f074
Author:    hseigel
Date:      2016-03-08 12:52 -0500
URL:       http://hg.openjdk.java.net/jigsaw/jake/hotspot/rev/fc6d7220f074

Remove unused _module_offset

! src/share/vm/runtime/vmStructs.cpp