reverted failure test for buildbot.

src/test/unittests/Main.cpp

@@ -40,9 +40,5 @@ main(int argc, char **argv)
 
 	testing::InitGoogleTest(&argc, argv);
 
-	// HACK: temp fail for unit tests to test buildbot failure email.
-	EXPECT_EQ(true, false);
-	return 1;
-
 	return RUN_ALL_TESTS();
 }