@@ -475,24 +475,10 @@
 ])
 AC_CHECK_FUNC(localtime_r, [
 	AC_DEFINE(HAVE_LOCALTIME_R, 1, [Whether we have localtime_r])
 ])
 
-AC_MSG_CHECKING(for tm_gmtoff in struct tm)
-AC_TRY_COMPILE([
-	#define _GNU_SOURCE
-	#include <time.h>
-], [
-	struct tm tm;
-	tm.tm_gmtoff = 0;
-], [
-	AC_DEFINE(STRUCT_TM_HAS_TM_GMTOFF, 1, [Whether struct tm has tm_gmtoff])
-	AC_MSG_RESULT(yes)
-], [
-	AC_MSG_RESULT(no)
-])
-
 AC_CHECK_FUNC(kqueue, [
 	AC_DEFINE(HAVE_KQUEUE, 1, [Whether we have kqueue])
 	AC_SUBST(OFSTREAMOBSERVER_KQUEUE_M, "OFStreamObserver_kqueue.m")
 ])
 AC_CHECK_HEADER(poll.h, [