removed sql statement from execute result

src/sql/query_intermediates.cpp

@@ -103,7 +103,7 @@ query_into_intermediate query_insert_intermediate::into(const std::string &table
   return {session_, builder_.into(table, column_names)};
 }
 
-std::pair<size_t, std::string> query_execute_finish::execute()
+size_t query_execute_finish::execute()
 {
   return session_.execute(builder_.compile().sql);
 }