To tempoarily disable or uninstall the currently active version of EPIC, select Help → Software and Updates → Manage Configuration from the menu. Expand the tree in the dialog window which appears and select the EPIC feature. Click on the option Disable in the panel on the right side and restart Eclipse when asked. At this point EPIC is disabled, but still present on disk. To remove it completely, enter the same dialog again and select the previously disabled version of EPIC (you may need to toggle showing disabled features in the dialog's toolbar). The option Uninstall will now remove the chosen version of EPIC completely.