remove deprecated functions

pkg/auth/validate.go

@@ -1,6 +1,7 @@
 package auth
 
 import (
+	"crypto/md5"
 	"crypto/rand"
 	"encoding/hex"
 	"fmt"
@@ -10,6 +11,12 @@ import (
 	"github.com/bluenviron/gortsplib/v4/pkg/url"
 )
 
+func md5Hex(in string) string {
+	h := md5.New()
+	h.Write([]byte(in))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
 // GenerateNonce2 generates a nonce that can be used in Validate().
 func GenerateNonce2() (string, error) {
 	byts := make([]byte, 16)
@@ -21,17 +28,6 @@ func GenerateNonce2() (string, error) {
 	return hex.EncodeToString(byts), nil
 }
 
-// GenerateNonce generates a nonce that can be used in Validate().
-//
-// Deprecated: use GenerateNonce2.
-func GenerateNonce() string {
-	v, err := GenerateNonce2()
-	if err != nil {
-		panic(err)
-	}
-	return v
-}
-
 // GenerateWWWAuthenticate generates a WWW-Authenticate header.
 func GenerateWWWAuthenticate(methods []headers.AuthMethod, realm string, nonce string) base.HeaderValue {
 	if methods == nil {