Various deprecation cleanup.

Change-Id: Ic9f4a908c1ed2636dc024869f5625d3a0ca906c9
diff --git a/user/BUILD b/user/BUILD
index 35b2406..b4ff116 100644
--- a/user/BUILD
+++ b/user/BUILD
@@ -270,7 +270,6 @@
             "src/com/google/gwt/json/client/JSONObject.java",
             "src/com/google/gwt/json/client/JSONString.java",
             "src/com/google/gwt/json/client/JSONValue.java",
-            "src/com/google/gwt/core/client/impl/SerializableThrowable.java",
             "src/com/google/gwt/core/client/JsonUtils.java",
             "src/com/google/gwt/core/client/impl/WeakMapping.java",
             "src/com/google/gwt/xhr/client/ReadyStateChangeHandler.java",
diff --git a/user/src/com/google/gwt/core/client/impl/SerializableThrowable.java b/user/src/com/google/gwt/core/client/impl/SerializableThrowable.java
deleted file mode 100644
index 509679a..0000000
--- a/user/src/com/google/gwt/core/client/impl/SerializableThrowable.java
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright 2010 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-package com.google.gwt.core.client.impl;
-
-import java.io.Serializable;
-
-/**
- * @deprecated use {@link com.google.gwt.core.shared.SerializableThrowable} instead.
- */
-@Deprecated
-public class SerializableThrowable implements Serializable {
-  private SerializableThrowable cause = null;
-  private String message = null;
-  private StackTraceElement[] stackTrace = null;
-  private String typeName = null;
-
-  /**
-   * @deprecated use com.google.gwt.core.client.SerializableThrowable instead.
-   */
-  @Deprecated
-  public static class ThrowableWithClassName extends Throwable {
-
-    private String typeName;
-
-    public ThrowableWithClassName(String message, Throwable cause, String typeName) {
-      super(message, cause);
-      this.typeName = typeName;
-    }
-
-    public ThrowableWithClassName(String message, String typeName) {
-      super(message);
-      this.typeName = typeName;
-    }
-
-    public String getExceptionClass() {
-      return typeName;
-    }
-  }
-
-  /**
-   * Create a new SerializableThrowable from a Throwable.
-   */
-  public SerializableThrowable(Throwable t) {
-    message = t.getMessage();
-    if (t.getCause() != null && t.getCause() != t) {
-      cause = new SerializableThrowable(t.getCause());
-    }
-    stackTrace = t.getStackTrace();
-    typeName = t.getClass().getName();
-  }
-  
-  protected SerializableThrowable() {
-    // for serialization
-  }
-  
-  public SerializableThrowable getCause() {
-    return cause;
-  }
-  
-  public String getMessage() {
-    return message;
-  }
-  
-  public StackTraceElement[] getStackTrace() {
-    return stackTrace;
-  }
-
-  /**
-   * Create a new Throwable from this SerializableThrowable.
-   */
-  public Throwable getThrowable() {
-    Throwable t;
-    if (cause != null) {
-      t = new ThrowableWithClassName(message, cause.getThrowable(), typeName);
-    } else {
-      t = new ThrowableWithClassName(message, typeName);
-    }
-    t.setStackTrace(stackTrace);
-    return t;
-  }
-  
-  public void setCause(SerializableThrowable c) {
-    cause = c;
-  }
-  
-  public void setMessage(String msg) {
-    message = msg;
-  }
-  
-  public void setStackTrace(StackTraceElement[] st) {
-    stackTrace = st;
-  }
-}
diff --git a/user/test/com/google/gwt/http/HTTPSuite.java b/user/test/com/google/gwt/http/HTTPSuite.java
index 0956c1a..0a4c6c6 100644
--- a/user/test/com/google/gwt/http/HTTPSuite.java
+++ b/user/test/com/google/gwt/http/HTTPSuite.java
@@ -27,7 +27,6 @@
 /**
  * TODO: document me.
  */
-@Deprecated
 public class HTTPSuite {
   public static Test suite() {
     GWTTestSuite suite = new GWTTestSuite(