removed solution import from lesson 4 coinchange test

Author: cutajarj

src/test/java/com/packt/datastructuresandalg/lesson4/activity/coinchange/CoinChangeTest.java

@@ -1,10 +1,7 @@
 package com.packt.datastructuresandalg.lesson4.activity.coinchange;
 
-import com.packt.datastructuresandalg.lesson4.activity.coinchange.solution.CoinChange;
 import junit.framework.TestCase;
 
-import java.util.Arrays;
-
 public class CoinChangeTest extends TestCase {
     CoinChange change = new CoinChange();