[opengrok] Corrected typo, Removed unused import

[peter.darren.b...@gmail.com]

Author: Peter Bray <Peter.Darren.Bray at gmail.com>
Repository: /hg/opengrok/trunk
Latest revision: 198e7f05325ba2ca0e4432a13c7fb48e0d93c1b8
Total changesets: 1
Log message:
Corrected typo, Removed unused import

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