Remove left and right path preprocessing in startFolderDiff

Now it's caller responsibility to provide correct paths

filediff-node-module/src/main/java/org/sudu/experiments/DiffEngine.java

@@ -49,9 +49,6 @@ public void startFolderDiff(JSString leftPath, JSString rightPath, Channel chann
     JsHelper.consoleInfo("Starting folder diff ");
     boolean scanFileContent = true;
 
-    leftPath = preparePath(leftPath);
-    rightPath = preparePath(rightPath);
-
     if (notDir(leftPath))
       throw new IllegalArgumentException("Left path " + leftPath.stringValue() + " should be directory");
     if (notDir(rightPath))
@@ -165,11 +162,4 @@ public static boolean isDir(JSString path) {
     return Fs.isDirectory(path);
   }
 
-  static JSString preparePath(JSString jsString) {
-    String result = jsString.stringValue();
-    if (result.startsWith("file:///")) result = result.substring("file:///".length());
-    return JSString.valueOf(
-        result.replace("%3A", ":")
-    );
-  }
 }