removed unused import

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1084593 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math/stat/clustering/KMeansPlusPlusClusterer.java

@@ -24,7 +24,6 @@ import java.util.Random;
 
 import org.apache.commons.math.exception.ConvergenceException;
 import org.apache.commons.math.exception.MathIllegalArgumentException;
-import org.apache.commons.math.exception.NullArgumentException;
 import org.apache.commons.math.exception.NumberIsTooSmallException;
 import org.apache.commons.math.exception.util.LocalizedFormats;
 import org.apache.commons.math.stat.descriptive.moment.Variance;

src/test/java/org/apache/commons/math/ConvergenceExceptionTest.java

@@ -20,7 +20,6 @@ package org.apache.commons.math;
 
 import java.util.Locale;
 
-import org.apache.commons.math.exception.util.LocalizedFormats;
 import org.junit.Assert;
 import org.junit.Test;
 

src/test/java/org/apache/commons/math/ode/sampling/DummyStepInterpolatorTest.java

@@ -25,7 +25,6 @@ import java.io.ObjectInputStream;
 import java.io.IOException;
 
 import org.apache.commons.math.exception.MathUserException;
-import org.apache.commons.math.exception.util.Localizable;
 import org.apache.commons.math.exception.util.LocalizedFormats;
 import org.apache.commons.math.ode.sampling.AbstractStepInterpolator;
 import org.apache.commons.math.ode.sampling.DummyStepInterpolator;

src/test/java/org/apache/commons/math/special/BetaTest.java

@@ -19,7 +19,6 @@ package org.apache.commons.math.special;
 import org.apache.commons.math.TestUtils;
 
 import org.junit.Test;
-import org.junit.Assert;
 
 /**
  * @version $Revision$ $Date$