Remove unused imports

src/main/org/apache/tools/ant/taskdefs/EchoXML.java

@@ -18,7 +18,6 @@
 package org.apache.tools.ant.taskdefs;
 
 import java.io.File;
-import java.io.IOException;
 import java.io.OutputStream;
 
 import org.apache.tools.ant.BuildException;

src/main/org/apache/tools/ant/taskdefs/optional/image/ImageIOTask.java

@@ -39,10 +39,8 @@ import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * A MatchingTask which relies on Java ImageIO to read existing image files

src/main/org/apache/tools/ant/util/FileUtils.java

@@ -39,10 +39,8 @@ import java.nio.file.StandardOpenOption;
 import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
-import java.util.Map;
 import java.util.Optional;
 import java.util.Random;
 import java.util.Stack;

src/tests/junit/org/apache/tools/ant/taskdefs/BZip2Test.java

@@ -26,7 +26,6 @@ import org.junit.Test;
 
 import java.io.BufferedInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;

src/tests/junit/org/apache/tools/ant/taskdefs/FixCrLfTest.java

@@ -20,7 +20,6 @@ package org.apache.tools.ant.taskdefs;
 
 import java.io.BufferedInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;

src/tests/junit/org/apache/tools/ant/taskdefs/ReplaceTest.java

@@ -20,7 +20,6 @@ package org.apache.tools.ant.taskdefs;
 
 import java.io.BufferedInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;

src/tests/junit/org/apache/tools/ant/types/CharSetTest.java

@@ -26,7 +26,6 @@ import org.junit.runners.Parameterized;
 import java.util.Arrays;
 import java.util.Collection;
 
-import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.equalToIgnoringCase;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThat;