This page lets you install plugins and update existing plugins. To remove any of these plugins, go to the {bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}splugins{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}s page and if you have the permission to remove plugins you should be able to do this.