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diff --git a/src/actors/scala/actors/threadpool/CompletionService.java b/src/actors/scala/actors/threadpool/CompletionService.java
deleted file mode 100644
index 219ab7affa..0000000000
--- a/src/actors/scala/actors/threadpool/CompletionService.java
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Written by Doug Lea with assistance from members of JCP JSR-166
- * Expert Group and released to the public domain, as explained at
- * http://creativecommons.org/licenses/publicdomain
- */
-
-package scala.actors.threadpool;
-
-/**
- * A service that decouples the production of new asynchronous tasks
- * from the consumption of the results of completed tasks.  Producers
- * <tt>submit</tt> tasks for execution. Consumers <tt>take</tt>
- * completed tasks and process their results in the order they
- * complete.  A <tt>CompletionService</tt> can for example be used to
- * manage asynchronous IO, in which tasks that perform reads are
- * submitted in one part of a program or system, and then acted upon
- * in a different part of the program when the reads complete,
- * possibly in a different order than they were requested.
- *
- * <p>Typically, a <tt>CompletionService</tt> relies on a separate
- * {@link Executor} to actually execute the tasks, in which case the
- * <tt>CompletionService</tt> only manages an internal completion
- * queue. The {@link ExecutorCompletionService} class provides an
- * implementation of this approach.
- *
- * <p>Memory consistency effects: Actions in a thread prior to
- * submitting a task to a {@code CompletionService}
- * <a href="package-summary.html#MemoryVisibility"><i>happen-before</i></a>
- * actions taken by that task, which in turn <i>happen-before</i>
- * actions following a successful return from the corresponding {@code take()}.
- *
- */
-public interface CompletionService {
-    /**
-     * Submits a value-returning task for execution and returns a Future
-     * representing the pending results of the task.  Upon completion,
-     * this task may be taken or polled.
-     *
-     * @param task the task to submit
-     * @return a Future representing pending completion of the task
-     * @throws RejectedExecutionException if the task cannot be
-     *         scheduled for execution
-     * @throws NullPointerException if the task is null
-     */
-    Future submit(Callable task);
-
-    /**
-     * Submits a Runnable task for execution and returns a Future
-     * representing that task.  Upon completion, this task may be
-     * taken or polled.
-     *
-     * @param task the task to submit
-     * @param result the result to return upon successful completion
-     * @return a Future representing pending completion of the task,
-     *         and whose <tt>get()</tt> method will return the given
-     *         result value upon completion
-     * @throws RejectedExecutionException if the task cannot be
-     *         scheduled for execution
-     * @throws NullPointerException if the task is null
-     */
-    Future submit(Runnable task, Object result);
-
-    /**
-     * Retrieves and removes the Future representing the next
-     * completed task, waiting if none are yet present.
-     *
-     * @return the Future representing the next completed task
-     * @throws InterruptedException if interrupted while waiting
-     */
-    Future take() throws InterruptedException;
-
-
-    /**
-     * Retrieves and removes the Future representing the next
-     * completed task or <tt>null</tt> if none are present.
-     *
-     * @return the Future representing the next completed task, or
-     *         <tt>null</tt> if none are present
-     */
-    Future poll();
-
-    /**
-     * Retrieves and removes the Future representing the next
-     * completed task, waiting if necessary up to the specified wait
-     * time if none are yet present.
-     *
-     * @param timeout how long to wait before giving up, in units of
-     *        <tt>unit</tt>
-     * @param unit a <tt>TimeUnit</tt> determining how to interpret the
-     *        <tt>timeout</tt> parameter
-     * @return the Future representing the next completed task or
-     *         <tt>null</tt> if the specified waiting time elapses
-     *         before one is present
-     * @throws InterruptedException if interrupted while waiting
-     */
-    Future poll(long timeout, TimeUnit unit) throws InterruptedException;
-}