Removed not used imports

This patch removes the import lines not used

test/OLItest/TestRunner.py

@@ -13,11 +13,8 @@
 #    You should have received a copy of the GNU General Public License
 #    along with this program; if not, write to the Free Software
 #    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
-import unittest
-import logging
 import os
 import re
-import sys
 import shutil
 import subprocess
 import tempfile