test: remove third param from assert.strictEqual

Removing third argument in calls to assert.strictEqual() so that the
values of the first two arguments are shown instead as this is more
useful for debugging.

Refs: https://nodejs.org/api/assert.html#assert_assert_strictequal_actual_expected_message

PR-URL: #19536
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>

Author: [email protected]

test/parallel/test-fs-mkdir-rmdir.js

@@ -31,8 +31,8 @@ fs.mkdir(d, 0o666, common.mustCall(function(err) {
   fs.mkdir(d, 0o666, common.mustCall(function(err) {
     assert.ok(err, 'got no error');
     assert.ok(/^EEXIST/.test(err.message), 'got no EEXIST message');
-    assert.strictEqual(err.code, 'EEXIST', 'got no EEXIST code');
-    assert.strictEqual(err.path, d, 'got no proper path for EEXIST');
+    assert.strictEqual(err.code, 'EEXIST');
+    assert.strictEqual(err.path, d);
 
     fs.rmdir(d, assert.ifError);
   }));