Remove incorrect check.

packages/filebrowser/src/model.ts

@@ -386,7 +386,7 @@ class FileBrowserModel implements IDisposable {
    * Handle a change on the contents manager.
    */
   private _onFileChanged(sender: Contents.IManager, change: Contents.IChangedArgs): void {
-    let path = this._model.path || '.';
+    let path = this._model.path;
     let value = change.oldValue;
     if (value && value.path && PathExt.dirname(value.path) === path) {
       this._fileChanged.emit(change);