Fix valgrind problem

test/unittest/readertest.cpp

@@ -14,14 +14,6 @@
 
 #include "unittest.h"
 
-// __SSE2__ and __SSE4_2__ are recognized by gcc, clang, and the Intel compiler.
-// We use -march=native with gmake to enable -msse2 and -msse4.2, if supported.
-#if defined(__SSE4_2__)
-#  define RAPIDJSON_SSE42
-#elif defined(__SSE2__)
-#  define RAPIDJSON_SSE2
-#endif
-
 #include "rapidjson/reader.h"
 #include "rapidjson/internal/dtoa.h"
 #include "rapidjson/internal/itoa.h"