Uninstalling
Eclipse™ maintains a registry of what plugins have been installed, and gives users a means of removing plugins from it.
Firstly, open the About Eclipse dialog. On macOS® this can be found in the Eclipse menu, on every other platform – the 'Help' menu.

Click on Installation details. Once the Eclipse Installation Details dialog appears, click on the Installed Software tab to review which plugins are installed.

Once a the software is found, you can uninstall it using the Uninstall ... button. Users might be advised to restart Eclipse once the process is complete.