Remove io.ebean.meta.MetricType as it is unnecessary (#1923)

src/main/java/io/ebeaninternal/server/profile/DTimedMetricMap.java

@@ -1,6 +1,5 @@
 package io.ebeaninternal.server.profile;
 
-import io.ebean.meta.MetricType;
 import io.ebean.meta.MetricVisitor;
 import io.ebean.metric.TimedMetricMap;
 
@@ -8,14 +7,11 @@ import java.util.concurrent.ConcurrentHashMap;
 
 class DTimedMetricMap implements TimedMetricMap {
 
-  private final MetricType metricType;
-
   private final String name;
 
   private final ConcurrentHashMap<String, DTimedMetric> map = new ConcurrentHashMap<>();
 
-  DTimedMetricMap(MetricType metricType, String name) {
-    this.metricType = metricType;
+  DTimedMetricMap(String name) {
     this.name = name;
   }
 
@@ -26,7 +22,7 @@ class DTimedMetricMap implements TimedMetricMap {
 
   @Override
   public void add(String key, long exeMicros) {
-    map.computeIfAbsent(key, (k) -> new DTimedMetric(metricType, name + key)).add(exeMicros);
+    map.computeIfAbsent(key, (k) -> new DTimedMetric(name + key)).add(exeMicros);
   }
 
   @Override