test: simplify tmpdir import in wasi tests

PR-URL: #30770
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

test/wasi/test-wasi-symlinks.js

@@ -33,7 +33,7 @@ if (process.argv[2] === 'wasi-child') {
 
   const assert = require('assert');
   const cp = require('child_process');
-  const tmpdir = require('../../test/common/tmpdir');
+  const tmpdir = require('../common/tmpdir');
 
   // Setup the sandbox environment.
   tmpdir.refresh();

test/wasi/test-wasi.js

@@ -3,7 +3,7 @@ const common = require('../common');
 
 if (process.argv[2] === 'wasi-child') {
   const fixtures = require('../common/fixtures');
-  const tmpdir = require('../../test/common/tmpdir');
+  const tmpdir = require('../common/tmpdir');
   const fs = require('fs');
   const path = require('path');