[opengrok] Removed unused variables

[trond.nor...@sun.com]

Author: Trond Norbye <trond.norbye at sun.com>
Repository: /hg/opengrok/trunk
Latest revision: eddb3bbff8966ac2f0d693f393c6ce3d9c133bcf
Total changesets: 1
Log message:
Removed unused variables

Files:
        update: src/org/opensolaris/opengrok/history/HistoryEntry.java
        update: src/org/opensolaris/opengrok/history/HistoryReader.java