fix unused (#7046)

Author: zverevgeny

ydb/core/tx/columnshard/engines/storage/indexes/max/meta.h

@@ -12,6 +12,7 @@ class TIndexMeta: public TIndexByColumns {
     static inline auto Registrator = TFactory::TRegistrator<TIndexMeta>(GetClassNameStatic());
 protected:
     virtual TConclusionStatus DoCheckModificationCompatibility(const IIndexMeta& newMeta) const override {
+        Y_UNUSED(newMeta);
         return TConclusionStatus::Fail("max index not modifiable");
     }
     virtual void DoFillIndexCheckers(
@@ -75,4 +76,4 @@ class TIndexMeta: public TIndexByColumns {
     std::shared_ptr<arrow::Scalar> GetMaxScalarVerified(const std::vector<TString>& data, const std::shared_ptr<arrow::DataType>& type) const;
 };
 
-}   // namespace NKikimr::NOlap::NIndexes
+}   // namespace NKikimr::NOlap::NIndexes