If you simply want to remove the icons from the menu bar, you can ⌘-Click the icons and then drag them out of the menu bar, one at a time. Be sure to drag them down far enough so a little ⓧ icon appears on the cursor.
However, that doesn't uninstall whatever application put them in the menu bar in the first place. If you want to uninstall the original application, you'll need to figure where the menu bar items came from.
You can use the Accessibility Inspector tool to start to understand which applications originally installed the menu bar icons. Follow the instructions from this Ask Different Q&A for how to use Accessibility Inspector. Essentially, it comes down to:
- Clicking the crosshair/reticle button in the toolbar
- Clicking the menu bar icon in question
- Clicking
SHOW
in the Accessibility Inspector's Hierarchy section
From there, you should be able to search around online for instructions on how to uninstall a specific application.
Applications
to see any applications you don't recognize?