Removed a FIXME that's not relevant anymore

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@4713 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/challenges/challenge.cpp

@@ -57,8 +57,6 @@ void Challenge::addUnlockGPReward(const std::string &gp_name)
 {
     UnlockableFeature feature;
     
-    // FIXME : why are we translation an internal name here??
-    //feature.name = _(gp_name.c_str());
     feature.name = gp_name.c_str();
     
     feature.type = UNLOCK_GP;