Remove comment

Author: svilen-mihaylov-elastic

x-pack/plugin/ql/src/main/java/org/elasticsearch/xpack/ql/querydsl/query/QueryStringQuery.java

@@ -49,7 +49,6 @@
 
 public class QueryStringQuery extends LeafQuery {
 
-    // TODO: it'd be great if these could be constants instead of Strings, needs a core change to make the fields public first
     private static final Map<String, BiConsumer<QueryStringQueryBuilder, String>> BUILDER_APPLIERS = Map.ofEntries(
         entry(ALLOW_LEADING_WILDCARD_FIELD.getPreferredName(), (qb, s) -> qb.allowLeadingWildcard(Booleans.parseBoolean(s))),
         entry(ANALYZE_WILDCARD_FIELD.getPreferredName(), (qb, s) -> qb.analyzeWildcard(Booleans.parseBoolean(s))),