docs(cli/dts): make worker example pass (#10703)

cli/dts/lib.deno.unstable.d.ts

@@ -1351,28 +1351,6 @@ declare interface WorkerOptions {
    *     },
    *   }
    * );
-   * worker.postMessage({ cmd: "readFile", fileName: "./log.txt" });
-   *
-   * // deno_worker.ts
-   *
-   *
-   * self.onmessage = async function (e) {
-   *     const { cmd, fileName } = e.data;
-   *     if (cmd !== "readFile") {
-   *         throw new Error("Invalid command");
-   *     }
-   *     const buf = await Deno.readFile(fileName);
-   *     const fileContents = new TextDecoder().decode(buf);
-   *     console.log(fileContents);
-   * }
-   *
-   * // $ cat log.txt
-   * // hello world
-   * // hello world 2
-   *
-   * // $ deno run --allow-read mod.ts
-   * // hello world
-   * // hello world2
    * ```
    */
   // TODO(Soremwar)