remove Mac OS X file.
remove Mac OS X file.

sujen1412/nutch-python,memex-explorer/nutch-python,YongchaoShang/nutch-python,chrismattmann/nutch-python,memex-explorer/nutch-python,JianShiUSC/nutchpy,YongchaoShang/nutch-python,sujen1412/nutch-python,chrismattmann/nutch-python