removed unused import

Author: Claudenw

src/test/java/org/apache/commons/cli/CommandLineTest.java

@@ -27,7 +27,6 @@ Licensed to the Apache Software Foundation (ASF) under one or more
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Properties;
 import java.util.function.Supplier;