Revert trunk@6519, "Flipping DisclosurePanel arrow in RTL.",
due to build break on IE7:

Scanning for additional dependencies: [...]com/google/gwt/user/client/ui/FormPanel.java
 [WARN] For the following type(s), generated source was never committed (did you forget to call commit()?)
 [WARN] com.google.gwt.user.client.ui.com_google_gwt_user_client_ui_DisclosurePanel_DefaultImages_default_MhtmlClientBundleGenerator
 [ERROR] Cannot proceed due to previous errors

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@6528 8db76d5a-ed1c-0410-87a9-c151d255dfc7

user/src/com/google/gwt/user/client/ui/DisclosurePanel.java

diff --git a/user/src/com/google/gwt/user/client/ui/DisclosurePanel.java b/user/src/com/google/gwt/user/client/ui/DisclosurePanel.java
index 51c8855..469061d 100644
--- a/user/src/com/google/gwt/user/client/ui/DisclosurePanel.java
+++ b/user/src/com/google/gwt/user/client/ui/DisclosurePanel.java
@@ -26,7 +26,6 @@
 import com.google.gwt.event.shared.HandlerRegistration;
 import com.google.gwt.resources.client.ClientBundle;
 import com.google.gwt.resources.client.ImageResource;
-import com.google.gwt.resources.client.ImageResource.ImageOptions;
 import com.google.gwt.user.client.DOM;
 import com.google.gwt.user.client.Element;
 import com.google.gwt.user.client.Event;
@@ -57,7 +56,6 @@
     FiresDisclosureEvents, HasWidgets, HasAnimation,
     HasOpenHandlers<DisclosurePanel>, HasCloseHandlers<DisclosurePanel> {
   interface DefaultImages extends ClientBundle {
-    @ImageOptions(flipRtl = true)
     ImageResource disclosurePanelClosed();
 
     ImageResource disclosurePanelOpen();