uneeded imports removed

src/fr/inra/pappso/xtandempipeline/output/MassChroQmlWriter.java

@@ -23,12 +23,10 @@
 
 package fr.inra.pappso.xtandempipeline.output;
 
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Hashtable;
-import java.util.Iterator;
 
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.XMLStreamWriter;