Updated the rewritable set impl to remove the original key to avoid h…

…olding onto extra values (#2462)

warehouse/query-core/src/main/java/datawave/query/util/sortedset/RewritableSortedSetImpl.java

@@ -156,6 +156,8 @@ private boolean addResolvingCollisions(E e) {
         // return true if this is a new element to the set
         if (set.containsKey(e)) {
             if ((rewriteStrategy != null) && rewriteStrategy.rewrite(set.get(e), e)) {
+                // let's remove to original key first to avoid holding on to extra values
+                set.remove(e);
                 set.put(e, e);
                 return true;
             }