HPCC-14485 Remove (duplicate) legacy timing stats from progress

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>

common/workunit/workunit.cpp

@@ -254,30 +254,6 @@ protected:
             unsigned __int64 value;
             collection.getStatistic(kind, value, i);
             formatStatistic(formattedValue.clear(), value, kind);
-
-                //Until 6.0 generate the backward compatible tag name
-            const char * legacyTreeTag = queryLegacyTreeTag(kind);
-            if (legacyTreeTag)
-            {
-                StatisticMeasure measure = queryMeasure(kind);
-                if (measure == SMeasureSkew)
-                {
-                    //Minimum stats were always output as +ve numbers
-                    if (queryStatsVariant(kind) == StSkewMin)
-                        value = -value;
-
-                    target->setPropInt64(legacyTreeTag, value/100);
-                }
-                else if (measure == SMeasureTimeNs)
-                {
-                    //Legacy timings are in ms => scale
-                    target->setPropInt64(legacyTreeTag, value/1000000);
-                }
-                else
-                    target->setProp(legacyTreeTag, formattedValue);
-            }
-
-            //Unconditionally output in the new format.
             target->setProp(queryTreeTag(kind), formattedValue);
         }
     }