message: Remove old definition of the macro RTC_NOTREACHED
  Cr-Commit-Position: refs/heads/main@{#35356}
diff: @@ -445,8 +445,6 @@ RTC_NORETURN RTC_EXPORT void UnreachableCodeReached();
  #define RTC_UNREACHABLE_CODE_HIT false
  #define RTC_DCHECK_NOTREACHED() RTC_DCHECK(RTC_UNREACHABLE_CODE_HIT)
  -// Deprecated. Use RTC_DCHECK_NOTREACHED instead
  -#define RTC_NOTREACHED() RTC_DCHECK(RTC_UNREACHABLE_CODE_HIT)
  // Kills the process with an error message. Never returns. Use when you wish to
  // assert that a point in the code is never reached.
  