remove unused function/imports in wrangler entry (#8056)

* remove unused function wrangler entry

* Update wrangler.js

Author: threepointone

packages/wrangler/bin/wrangler.js

@@ -1,14 +1,8 @@
 #!/usr/bin/env node
 const { spawn } = require("child_process");
 const path = require("path");
-const fs = require("fs");
-const os = require("os");
 
 const MIN_NODE_VERSION = "16.13.0";
-const debug =
-	process.env["WRANGLER_LOG"] === "debug"
-		? (...args) => console.log(...args)
-		: () => {};
 
 let wranglerProcess;