Revert "Adding output of Platform information into the test runner"

Broken on at least one platform http://pastie.org/808217

This reverts commit 704f394c66.

tools/test.py

@@ -101,7 +101,6 @@ class ProgressIndicator(object):
       # ...and then reraise the exception to bail out
       raise
     self.Done()
-    print "\r\nPlatform: {0} {1}".format(platform.system(), platform.release())
     return not self.failed
 
   def RunSingle(self):