drop unused configure check for pthread_atfork (#4046)

configure

@@ -10538,17 +10538,6 @@ $as_echo "#define HAVE_BROKEN_PTHREAD_SIGMASK 1" >>confdefs.h
 
             ;;
         esac
-fi
-done
-
-      for ac_func in pthread_atfork
-do :
-  ac_fn_c_check_func "$LINENO" "pthread_atfork" "ac_cv_func_pthread_atfork"
-if test "x$ac_cv_func_pthread_atfork" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_ATFORK 1
-_ACEOF
-
 fi
 done
 

configure.ac

@@ -3043,7 +3043,6 @@ if test "$posix_threads" = "yes"; then
             [Define if pthread_sigmask() does not work on your system.])
             ;;
         esac])
-      AC_CHECK_FUNCS(pthread_atfork)
       AC_CHECK_FUNCS(pthread_getcpuclockid)
 fi
 

pyconfig.h.in

@@ -688,9 +688,6 @@
 /* Define if your compiler supports function prototype */
 #undef HAVE_PROTOTYPES
 
-/* Define to 1 if you have the `pthread_atfork' function. */
-#undef HAVE_PTHREAD_ATFORK
-
 /* Defined for Solaris 2.6 bug in pthread header. */
 #undef HAVE_PTHREAD_DESTRUCTOR