If the ads are implemented by Facebook, then you can't "actually" permanently remove them.
No matter the cases, you can install an application which blocks all the ads inside a webpage. The plug-in is a simple script which, defined by some rules, blocks everything from malicious websites to common ads. AdBlock Plus is the thing you need to hide those ads. Once you visit the website with your favorite browser, the page will automatically detect and provide the installation method. In some cases you will need to restart your browser for the settings to take effect.