chore: remove unused `shasum.mjs` (#2697)

.changeset/thirty-nails-camp.md

@@ -0,0 +1,2 @@
+---
+---

scripts/shasum.mjs

@@ -1,18 +0,0 @@
-#!/usr/bin/env node
-// @ts-check
-
-import { createHash } from "node:crypto";
-import { readFileSync } from "node:fs";
-
-/**
- * @param {string} filename
- * @param {string=} algorithm
- * @returns {string}
- */
-function hashFile(filename, algorithm = "sha256") {
-  const data = readFileSync(filename, { encoding: "utf-8" }).replace(/\r/g, "");
-  return createHash(algorithm).update(data).digest("hex");
-}
-
-const { [2]: filename } = process.argv;
-console.log(hashFile(filename));