diff --git a/util.go b/util.go
deleted file mode 100644
index 6a38f1e..0000000
--- a/util.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
-// SPDX-License-Identifier: MIT
-
-// Package util provides auxiliary functions internally used in webrtc package
-package suzu
-
-import (
-	"errors"
-	"strings"
-
-	"github.com/pion/randutil"
-)
-
-const (
-	runesAlpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
-)
-
-// Use global random generator to properly seed by crypto grade random.
-var globalMathRandomGenerator = randutil.NewMathRandomGenerator() // nolint:gochecknoglobals
-
-// MathRandAlpha generates a mathematical random alphabet sequence of the requested length.
-func MathRandAlpha(n int) string {
-	return globalMathRandomGenerator.GenerateString(n, runesAlpha)
-}
-
-// RandUint32 generates a mathematical random uint32.
-func RandUint32() uint32 {
-	return globalMathRandomGenerator.Uint32()
-}
-
-// FlattenErrs flattens multiple errors into one
-func FlattenErrs(errs []error) error {
-	errs2 := []error{}
-	for _, e := range errs {
-		if e != nil {
-			errs2 = append(errs2, e)
-		}
-	}
-	if len(errs2) == 0 {
-		return nil
-	}
-	return multiError(errs2)
-}
-
-type multiError []error //nolint:errname
-
-func (me multiError) Error() string {
-	var errstrings []string
-
-	for _, err := range me {
-		if err != nil {
-			errstrings = append(errstrings, err.Error())
-		}
-	}
-
-	if len(errstrings) == 0 {
-		return "multiError must contain multiple error but is empty"
-	}
-
-	return strings.Join(errstrings, "\n")
-}
-
-func (me multiError) Is(err error) bool {
-	for _, e := range me {
-		if errors.Is(e, err) {
-			return true
-		}
-		if me2, ok := e.(multiError); ok { //nolint:errorlint
-			if me2.Is(err) {
-				return true
-			}
-		}
-	}
-	return false
-}