As you continue to explore different Chrome apps, extensions, and Google Docs add-ons, there will be ones that you try and decide not to use. Leaving those unused add-ons can slow down Google Chrome and Chrome OS. To maintain the best performance when using Google Apps, delete these unused apps, extensions, and Google Docs add-ons whenever possible.
Deleting Google Chrome apps and extensions follow similar steps. For apps, right-click on the App icon when viewing apps in Google Chrome or in the App Launcher of Chrome OS and select Remove from Chrome... as shown in the following screenshot:
For deleting extensions, right-click on the extension icon beside the omnibar and select Remove from Chrome....
Removing add-ons in Google Docs requires a couple of steps, which are as follows:
In Google Docs, select Manage add-ons... from the Add-ons menu:
Beside the add-on, click on the MANAGE button and select Remove: