refactor: removed fs-rmsync extra func used for node <14 (#5159)

test/prepare-test-server.js

@@ -1,10 +1,10 @@
 const fs = require("fs");
-const rmSync = require("../extra/fs-rmSync.js");
 
 const path = "./data/test";
 
 if (fs.existsSync(path)) {
-    rmSync(path, {
+    fs.rmSync(path, {
         recursive: true,
+        force: true,
     });
 }