Unused "import" statements.
diff --git a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NetworkTest.java b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NetworkTest.java
index da60ad1..88154fc 100644
--- a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NetworkTest.java
+++ b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NetworkTest.java
@@ -17,11 +17,6 @@
 
 package org.apache.commons.math4.neuralnet;
 
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.util.Collection;
 import java.util.NoSuchElementException;
 
diff --git a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NeuronTest.java b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NeuronTest.java
index 14a8e90..3aba6bd 100644
--- a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NeuronTest.java
+++ b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/NeuronTest.java
@@ -17,12 +17,6 @@
 
 package org.apache.commons.math4.neuralnet;
 
-import java.io.ByteArrayOutputStream;
-import java.io.ByteArrayInputStream;
-import java.io.ObjectOutputStream;
-import java.io.ObjectInputStream;
-import java.io.IOException;
-
 import org.junit.Test;
 import org.junit.Assert;
 
diff --git a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/oned/NeuronStringTest.java b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/oned/NeuronStringTest.java
index 5d63662..e6aeec0 100644
--- a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/oned/NeuronStringTest.java
+++ b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/oned/NeuronStringTest.java
@@ -17,11 +17,6 @@
 
 package org.apache.commons.math4.neuralnet.oned;
 
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.util.ArrayList;
 import java.util.Collection;
 
diff --git a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/twod/NeuronSquareMesh2DTest.java b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/twod/NeuronSquareMesh2DTest.java
index 479e559..78833d5 100644
--- a/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/twod/NeuronSquareMesh2DTest.java
+++ b/commons-math-neuralnet/src/test/java/org/apache/commons/math4/neuralnet/twod/NeuronSquareMesh2DTest.java
@@ -17,11 +17,6 @@
 
 package org.apache.commons.math4.neuralnet.twod;
 
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.util.Collection;
 import java.util.Set;
 import java.util.HashSet;