Do not suppress cpplint readability/streams check.

tools/cpplint.py actually allows the inclusion of the <ostream> header
in a test file. It isn't working in the Code Style check because
tools/lint-hunks.py does not pass the file name to tools/cpplint.py.

Change-Id: Ife77eb0f96e36d6ef59348d6d3d2dfb8965cb032
diff --git a/test/fwd_kf_test.cc b/test/fwd_kf_test.cc
index eeb2f4f..50c2f36 100644
--- a/test/fwd_kf_test.cc
+++ b/test/fwd_kf_test.cc
@@ -9,7 +9,7 @@
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
 
-#include <ostream>  // NOLINT(readability/streams)
+#include <ostream>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 #include "test/codec_factory.h"