Those are the breadcrumbs added in a recent version of VSCode. To disable them in the latest version, you can navigate to your settings (via the gear icon in the lower left), and under the User Settings tab, click Workbench, then Breadcrumbs, then uncheck the Enabled box.
Or if you are using the JSON settings editor:
"breadcrumbs.enabled": false
I believe there may have been an intermediary version of VSCode where breadcrumbs were available but before the settings GUI was implemented, in which case the steps would be similar but you would have to navigate through the old settings page and modify the correct line of settings.json instead.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…