Remove unused util function.

rascal-lsp/src/main/rascal/lang/rascal/lsp/refactor/Util.rsc

@@ -108,13 +108,6 @@ bool isShorterTuple(tuple[loc, &T] t1, tuple[loc, &T] t2) = isShorter(t1[0], t2[
 }
 bool byOffset(loc l1, loc l2) = l1.offset < l2.offset;
 
-@synopsis{
-    Gives the longest location in a non-empty set of locations.
-    On a tie, gives one of the longest locations.
-}
-loc maxByLength(set[loc] locs:{_, *_}) = // at least one element
-    (|unknown:///|(0, 0, <0, 0>, <0, 0>) | it.length > l.length ? it : l | l <- locs);
-
 @synopsis{
     Predicate to reverse a sort order.
 }