tools: remove unused version function

PR-URL: nodejs#50390
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

tools/osx-notarize.sh

@@ -3,10 +3,6 @@
 # Notarize a generated node-<version>.pkg file as an Apple requirement for installation on macOS Catalina and later, as validated by Gatekeeper.
 # Uses notarytool and requires Xcode >= 13.0.
 
-version() {
-  echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }' || echo "0"
-}
-
 pkgid="$1"
 
 if [ -z "$pkgid" ]; then