UNITSOFMEASUREMENT-183: getProductUnits should probably be renamed

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-183

Author: keilw

src/test/java/javax/measure/test/EnumUnit.java

@@ -140,10 +140,4 @@ public Unit pow(int n) {
   public String getName() {
     return name();
   }
-
-  public Map getProductUnits() {
-    // TODO Auto-generated method stub
-    return null;
-  }
-
 }