Delete dead CSS bundle code

This was replaced when we switched to gwtexpui's CSS linker.

Signed-off-by: Shawn O. Pearce <sop@google.com>
diff --git a/src/main/java/com/google/gerrit/client/css/CssBundle.java b/src/main/java/com/google/gerrit/client/css/CssBundle.java
deleted file mode 100644
index 341f991..0000000
--- a/src/main/java/com/google/gerrit/client/css/CssBundle.java
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (C) 2009 The Android Open Source Project
-//
-// 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.gerrit.client.css;
-
-/** References a cached CSS file. */
-public interface CssBundle {
-  /** @return a reference to the bundle's CSS file. */
-  CssReference load();
-}
diff --git a/src/main/java/com/google/gerrit/client/css/CssReference.java b/src/main/java/com/google/gerrit/client/css/CssReference.java
deleted file mode 100644
index 37e2c24..0000000
--- a/src/main/java/com/google/gerrit/client/css/CssReference.java
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (C) 2009 The Android Open Source Project
-//
-// 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.gerrit.client.css;
-
-import com.google.gwt.core.client.GWT;
-import com.google.gwt.dom.client.Document;
-import com.google.gwt.dom.client.LinkElement;
-
-/** Reference to a CSS file under the module base. */
-public class CssReference {
-  private final String url;
-
-  /**
-   * Create a new reference to a CSS file.
-   * 
-   * @param name name of the CSS file, under the module base. Typically this is
-   *        a MD-5 or SHA-1 hash of the file content, with
-   *        <code>.cache.css</code> suffix, to permit long-lived caching of the
-   *        resource by browers and edge caches.
-   */
-  public CssReference(final String name) {
-    url = GWT.getModuleBaseURL() + name;
-  }
-
-  /** Inject this resource into the document as a style sheet. */
-  public void inject() {
-    final LinkElement style = Document.get().createLinkElement();
-    style.setRel("stylesheet");
-    style.setHref(url);
-    Document.get().getElementsByTagName("head").getItem(0).appendChild(style);
-  }
-}