pkg/stats: split out pkg/stats/sample

This will reduce the number of dependencies needed for the main
syzkaller tools.

1 files changed, 0 insertions, 20 deletions

diff --git a/pkg/stats/pvalue.go b/pkg/stats/pvalue.go
deleted file mode 100644
index 9f413f5aa..000000000
--- a/pkg/stats/pvalue.go
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2021 syzkaller project authors. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package stats
-
-// TODO: I didn't find the substitution as of Feb 2023. Let's keep it as is while it works.
-import "golang.org/x/perf/benchstat" // nolint:all
-
-// Mann-Whitney U test.
-func UTest(old, new *Sample) (pval float64, err error) {
-	// Unfortunately we cannot just invoke MannWhitneyUTest from x/perf/benchstat/internal/stats,
-	// so we first wrap the data in Metrics.
-	mOld := benchstat.Metrics{
-		RValues: old.Xs,
-	}
-	mNew := benchstat.Metrics{
-		RValues: new.Xs,
-	}
-	return benchstat.UTest(&mOld, &mNew)
-}