Remove unsupported entries, notice that particles now are auto- faded out by lifetime Also remove flips that are not visible at all
Causes minor performance improvement, but better than nothing.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@7597 178a84e3-b1eb-0310-8ba1-8eac791a3b58