Remove useless non-cross-platform tests.

src/test/util_tests.cpp

@@ -103,11 +103,13 @@ BOOST_AUTO_TEST_CASE(util_HexStr)
 
 BOOST_AUTO_TEST_CASE(util_DateTimeStrFormat)
 {
+/*These are platform-dependant and thus removed to avoid useless test failures
     BOOST_CHECK_EQUAL(DateTimeStrFormat("%x %H:%M:%S", 0), "01/01/70 00:00:00");
     BOOST_CHECK_EQUAL(DateTimeStrFormat("%x %H:%M:%S", 0x7FFFFFFF), "01/19/38 03:14:07");
     // Formats used within Bitcoin
     BOOST_CHECK_EQUAL(DateTimeStrFormat("%x %H:%M:%S", 1317425777), "09/30/11 23:36:17");
     BOOST_CHECK_EQUAL(DateTimeStrFormat("%x %H:%M", 1317425777), "09/30/11 23:36");
+*/
 }
 
 BOOST_AUTO_TEST_CASE(util_ParseParameters)