--- a/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/ImmutableHeaders.java	Wed Nov 08 22:51:18 2017 +0000
+++ b/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/ImmutableHeaders.java	Thu Nov 09 15:24:39 2017 +0300
@@ -28,11 +28,8 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
-import java.util.OptionalLong;
 import java.util.TreeMap;
 import java.util.function.Predicate;
-import static java.util.Collections.emptyList;
 import static java.util.Collections.emptyMap;
 import static java.util.Collections.unmodifiableList;
 import static java.util.Collections.unmodifiableMap;