Remove the npm projectRoot workaround

lib/install.js

@@ -1,28 +1,6 @@
-import path from 'node:path';
-import process from 'node:process';
 import bin from './index.js';
 
-function getProjectRoot() {
-  // `projectRoot` on postinstall could be INIT_CWD introduced in npm >= 5.4
-  // see: /~https://github.com/npm/npm/issues/16990
-  const initCwd = process.env.INIT_CWD;
-  if (initCwd) {
-    return initCwd;
-  }
-
-  // Fallback of getting INIT_CWD
-  const cwd = process.cwd();
-  const paths = cwd.split(path.sep);
-  // If `process.cwd` ends with 'node_modules/*' then get the dependent root directory,
-  // otherwise return the `cwd` (ordinary it will be the postinstall process of hugo-bin itself).
-  if (paths.length > 1 && paths[paths.length - 2] === 'node_modules') {
-    return path.resolve('../../', cwd);
-  }
-
-  return cwd;
-}
-
-bin(getProjectRoot()).run(['version'])
+bin().run(['version'])
   .then(() => {
     console.log('Hugo binary installed successfully!');
   })