How Do I Remove Apps Installed On Facebook From Mobile

After signing into Facebook , do the following steps:

1. Click on "Settings & Privacy" (Bottom).
2. Click on "Apps" to view the apps you've authorized.
3. Click on an app name.
4. Click on "Remove [App Name]"
5. In next page click on Remove to confirm.

Repeat this process to remove all the Apps/Games you no longer use on a regular basis.

Here is direct link to your apps list page.
https://m.facebook.com/privacy/touch/apps/?refid=31