转自:http://wiki.eclipse.org/FAQ_How_do_I_remove_a_plug-in%3F
新版Eclipse:
Help > About Eclipse > Installation Details > Installed Software,然后选择要卸载的plugin,点击 Uninstall 按钮卸载
老版Eclipse:
Run Help > Software Updates > Manage Configuration..., select the feature of interest, and disable it with the task shown in the right window.
When a feature is disabled, all its plug-ins will be disabled also. They are still available on disk, and they can be enabled at any time in the future.
To physically remove the feature and its plug-ins, you will have to manually remove the feature from the eclipse/features directory and its plug-ins from theeclipse/plugins directory. We advise extreme caution here. Remove the wrong ones, and you may have quite some trouble restoring your Eclipse to a stable state. Unless you care a lot about hard disk use, we recommend leaving the plug-ins where they are.
Note that when manually removing plugins as described above, some metadata is still cached by Eclipse, which can lead to problems later on. Running Eclipse with the -clean option can help with that, as it causes Eclipse to clean the cached metadata. See the Running Eclipse help page for details about this option.