remove extra semi

src/tests/junit/org/apache/tools/ant/util/ReaderInputStreamTest.java

@@ -24,7 +24,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.CharArrayReader;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.IOException;;
+import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.StringReader;
 import java.nio.charset.Charset;