Remove unused imports

Author: janbartel

appengine-jetty-managed-runtime/src/main/java/com/google/apphosting/runtime/jetty9/SessionManager.java

@@ -25,15 +25,11 @@
 import com.google.apphosting.runtime.SessionData;
 import com.google.apphosting.runtime.SessionStore;
 
-import org.eclipse.jetty.server.Handler;
-import org.eclipse.jetty.server.Server;
-import org.eclipse.jetty.server.SessionIdManager;
-import org.eclipse.jetty.server.handler.ContextHandler;
+
 import org.eclipse.jetty.server.session.AbstractSession;
 import org.eclipse.jetty.server.session.AbstractSessionManager;
 import org.eclipse.jetty.server.session.HashSessionIdManager;
-import org.eclipse.jetty.server.session.SessionHandler;
-import org.eclipse.jetty.util.component.LifeCycle.Listener;
+
 
 import java.io.PrintWriter;
 import java.io.StringWriter;
@@ -50,7 +46,7 @@
 import java.util.logging.Logger;
 
 import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpSession;
+
 
 /**
  * Implements the Jetty {@link AbstractSessionManager} and, as an