res_mkquery is not needed by the newdns branch?

diff -u -r ../mtr-66de3ecbab28b054b868a73fbb57f30549d770ac/configure.ac ./configure.ac
--- ../mtr-66de3ecbab28b054b868a73fbb57f30549d770ac/configure.ac	2016-05-03 05:01:11.000000000 -0400
+++ ./configure.ac	2016-06-21 10:07:34.430019831 -0400
@@ -86,43 +86,6 @@
 #   AC_CHECK_LIB(resolv, res_mkquery, ,
 #     AC_CHECK_LIB(resolv, __res_mkquery, , AC_MSG_ERROR(No resolver library found)))))
 
-# See if a library is needed for res_mkquery and if so put it in RESOLV_LIBS
-RESOLV_LIBS=
-AC_SUBST(RESOLV_LIBS)
-AC_DEFUN([LIBRESOLVTEST_SRC], [
-AC_LANG_PROGRAM([[
-#include <netinet/in.h>
-#include <resolv.h>
-]], [[
-int (*res_mkquery_func)(int,...) = (int (*)(int,...))res_mkquery;
-(void)(*res_mkquery_func)(0);
-]])])
-AC_MSG_CHECKING([whether library required for res_mkquery])
-RESOLV_LIB_NONE=
-AC_LINK_IFELSE([LIBRESOLVTEST_SRC],
-	[AC_MSG_RESULT([no])
-	RESOLV_LIB_NONE=yes],
-	[AC_MSG_RESULT([yes])])
-if test "x$RESOLV_LIB_NONE" = "x"; then
-	AC_MSG_CHECKING([for res_mkquery in -lbind])
-	STASH_LIBS="$LIBS"
-	LIBS="$STASH_LIBS -lbind"
-	AC_LINK_IFELSE([LIBRESOLVTEST_SRC],
-		[AC_MSG_RESULT([yes])
-		RESOLV_LIBS=-lbind],
-		[AC_MSG_RESULT([no])])
-	if test "x$RESOLV_LIBS" = "x"; then
-		AC_MSG_CHECKING([for res_mkquery in -lresolv])
-		LIBS="$STASH_LIBS -lresolv"
-		AC_LINK_IFELSE([LIBRESOLVTEST_SRC],
-			[AC_MSG_RESULT([yes])
-			RESOLV_LIBS=-lresolv],
-			[AC_MSG_RESULT([no])
-                        AC_MSG_ERROR(No resolver library found)])
-	fi
-	LIBS="$STASH_LIBS"
-fi
-
 AC_CHECK_FUNC(herror, , AC_DEFINE(NO_HERROR, 1, [Define if you don't have the herror() function available.]))
 AC_CHECK_FUNC(strerror, , AC_DEFINE(NO_STRERROR, 1, [Define if you don't have the strerror() function available.]))