cleanup

pdb-api/src/test/java/org/lucares/memory/MemoryScale.java

@@ -101,7 +101,6 @@ public class MemoryScale {
 	}
 
 	private static Object createPathAsUtf8(final String string) {
-		// TODO Auto-generated method stub
 		return string.getBytes(StandardCharsets.UTF_8);
 	}
 

pdb-plotting/src/main/java/org/lucares/pdb/plot/api/NullCustomAggregator.java

@@ -3,8 +3,8 @@ package org.lucares.pdb.plot.api;
 public class NullCustomAggregator implements CustomAggregator {
 
 	@Override
-	public void addValue(long epochMilli, long value) {
-		// TODO Auto-generated method stub
+	public void addValue(final long epochMilli, final long value) {
+		// nothing to do; this is a null-object
 
 	}