diff --git a/src/bin/pg_upgrade/t/002_pg_upgrade.pl b/src/bin/pg_upgrade/t/002_pg_upgrade.pl
index 4cbc75644c8..2f9b13bf0ae 100644
--- a/src/bin/pg_upgrade/t/002_pg_upgrade.pl
+++ b/src/bin/pg_upgrade/t/002_pg_upgrade.pl
@@ -208,25 +208,6 @@ if (defined($ENV{oldinstall}))
 	}
 }
 
-$oldnode->safe_psql("regression", "VACUUM FULL pg_largeobject;");
-
-# Record the relfrozenxid and relminmxid horizons from the old server.
-my $horizon_query = <<EOM;
-SELECT
-  c.oid::regclass, c.relfrozenxid, c.relminmxid
-FROM
-  pg_class c, pg_namespace n
-WHERE
-  c.relnamespace = n.oid AND
-  ((n.nspname !~ '^pg_temp_' AND n.nspname !~ '^pg_toast_temp_' AND
-    n.nspname NOT IN ('pg_catalog', 'information_schema', 'binary_upgrade',
-                      'pg_toast'))
-  OR (n.nspname = 'pg_catalog' AND relname IN ('pg_largeobject')))
-ORDER BY c.oid::regclass::text
-EOM
-$horizon_query =~ s/\s+/ /g; # run it together on one line
-my $horizon1 = $oldnode->safe_psql('regression', $horizon_query);
-
 # In a VPATH build, we'll be started in the source directory, but we want
 # to run pg_upgrade in the build directory so that any files generated finish
 # in it, like delete_old_cluster.{sh,bat}.
@@ -311,9 +292,6 @@ $newnode->command_ok(
 	],
 	'dump after running pg_upgrade');
 
-# And record the horizons from the upgraded cluster as well.
-my $horizon2 = $newnode->safe_psql('regression', $horizon_query);
-
 # Compare the two dumps, there should be no differences.
 my $compare_res = compare("$tempdir/dump1.sql", "$tempdir/dump2.sql");
 is($compare_res, 0, 'old and new dumps match after pg_upgrade');
@@ -331,28 +309,4 @@ if ($compare_res != 0)
 	print "=== EOF ===\n";
 }
 
-# Compare the horizons, there should be no differences.
-my $horizons_ok = $horizon1 eq $horizon2;
-ok($horizons_ok, 'old and new horizons match after pg_upgrade');
-
-# Provide more context if the horizons do not match.
-if (! $horizons_ok)
-{
-	# output is long, so use diff to compare
-	open my $fh, ">", "$tempdir/horizon1.txt" or die "could not open file: $!";
-	print $fh $horizon1;
-	close $fh;
-	open $fh, ">", "$tempdir/horizon2.txt" or die "could not open file: $!";
-	print $fh $horizon2;
-	my ($stdout, $stderr) =
-		run_command([ 'diff', "$tempdir/horizon1.txt", "$tempdir/horizon2.txt" ]);
-	close $fh;
-	print "=== diff of $tempdir/horizon1.txt and $tempdir/horizon2.txt\n";
-	print "=== stdout ===\n";
-	print $stdout;
-	print "=== stderr ===\n";
-	print $stderr;
-	print "=== EOF ===\n";
-}
-
 done_testing();