removed unused imports

Author: Blazer-007

gobblin-temporal/src/main/java/org/apache/gobblin/temporal/ddm/workflow/impl/CommitStepWorkflowImpl.java

@@ -18,7 +18,6 @@
 package org.apache.gobblin.temporal.ddm.workflow.impl;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
@@ -29,11 +28,9 @@
 import lombok.extern.slf4j.Slf4j;
 
 import org.apache.gobblin.metrics.event.TimingEvent;
-import org.apache.gobblin.metrics.opentelemetry.GobblinOpenTelemetryMetrics;
 import org.apache.gobblin.runtime.DatasetTaskSummary;
 import org.apache.gobblin.temporal.ddm.activity.ActivityType;
 import org.apache.gobblin.temporal.ddm.activity.CommitActivity;
-import org.apache.gobblin.temporal.ddm.activity.EmitOTelMetrics;
 import org.apache.gobblin.temporal.ddm.work.CommitStats;
 import org.apache.gobblin.temporal.ddm.work.DatasetStats;
 import org.apache.gobblin.temporal.ddm.work.WUProcessingSpec;