remove unused imports

Author: vladak

opengrok-indexer/src/test/java/org/opengrok/indexer/web/UtilTest.java

@@ -31,8 +31,6 @@
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Path;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;