Remove unused variable

Author: alesapin

src/Interpreters/TransposedMetricLog.h

@@ -43,7 +43,6 @@ class TransposedMetricLog : public PeriodicLog<TransposedMetricLogElement>
     static constexpr auto EVENT_TIME_MICROSECONDS_NAME = "event_time_microseconds";
     static constexpr auto METRIC_NAME = "metric";
     static constexpr auto VALUE_NAME = "value";
-    static constexpr auto EVENT_TIME_HOUR_NAME = "toStartOfHour(event_time)";
 
     static constexpr std::string_view PROFILE_EVENT_PREFIX = "ProfileEvent_";
     static constexpr std::string_view CURRENT_METRIC_PREFIX = "CurrentMetric_";