go to Help->About Eclipse Platform->Installation Details
select the package you no longer want, and click uninstall. then restart.
if unsure what to install, then I'd suggest going to Help->Install New Software and browsing the CDT download-site to see what you have installed.
CDT Download Site: http://download.eclipse.org/tools/cdt/releases/kepler
and yes, the bracketeer plugin has a cat for its icon. priceless.