CleanUp: [Collections] Remove missed debug statement
diff --git a/jcommons/org.eclipse.statet.jcommons.util/src/org/eclipse/statet/jcommons/collections/SortedArraySet.java b/jcommons/org.eclipse.statet.jcommons.util/src/org/eclipse/statet/jcommons/collections/SortedArraySet.java
index acde814..9ae0143 100644
--- a/jcommons/org.eclipse.statet.jcommons.util/src/org/eclipse/statet/jcommons/collections/SortedArraySet.java
+++ b/jcommons/org.eclipse.statet.jcommons.util/src/org/eclipse/statet/jcommons/collections/SortedArraySet.java
@@ -381,9 +381,6 @@
 	
 	
 	protected final void checkType(final Object o) {
-		if (o == null) {
-			System.out.println("XXX");
-		}
 		this.typeClass.cast(nonNullAssert(o));
 	}