cleaning code after null else management

CFTree.cpp

@@ -1528,17 +1528,8 @@ Retourne le noeud qui est dominé par tous les autres
 				for (unsigned i = 0; i < alt->size(); i++)
 				{
 					CFTree *subTree = alt->getI(i);
-					CFTreeSeq *seq = subTree->toSeq();
-					// manage null Alt leaf that generates null block (deal with the segfault)
-					if(seq != nullptr){
-						 if(seq->size() > 0){
 					alts.push_back(transform(subTree));
 				}
-					}
-					else{
-						alts.push_back(transform(subTree));
-					}
-				}
 				CFTreeAlt *newAlt = new CFTreeAlt(alts);
 				return newAlt;
 			}