Replace logging with one provided by ndn-cxx

Change-Id: I737d517c6a042120f8d81ea9b77c209444dc2b89
diff --git a/tests/wscript b/tests/wscript
index b157a32..bacd16b 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -17,7 +17,7 @@
         target="../unit-tests",
         source=bld.path.ant_glob(['unit-tests/**/*.cpp']),
         features=['cxx', 'cxxprogram'],
-        use='ChronoSync tests-main LOG4CXX',
+        use='ChronoSync tests-main',
         includes=['.'],
         install_path=None,
         )