src: remove GTEST_DONT_DEFINE_ASSERT_EQ in util.h

As indicated by the FIXME comment, this macro guard is no longer needed.

PR-URL: #12638
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

src/util.h

@@ -93,14 +93,6 @@ template <typename T> using remove_reference = std::remove_reference<T>;
     }                                                                         \
   } while (0)
 
-// FIXME(bnoordhuis) cctests don't link in node::Abort() and node::Assert().
-#ifdef GTEST_DONT_DEFINE_ASSERT_EQ
-#undef ABORT
-#undef CHECK
-#define ABORT ABORT_NO_BACKTRACE
-#define CHECK assert
-#endif
-
 #ifdef NDEBUG
 #define ASSERT(expr)
 #else