diff --git a/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java b/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java
deleted file mode 100644
index 38736f3a1..000000000
--- a/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2010 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.android.inputmethod.compat;
-
-import android.content.SharedPreferences;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
-/**
- * Reflection utils to call SharedPreferences$Editor.apply when possible,
- * falling back to commit when apply isn't available.
- */
-public class SharedPreferencesCompat {
-    private static final Method sApplyMethod = findApplyMethod();
-
-    private static Method findApplyMethod() {
-        try {
-            return SharedPreferences.Editor.class.getMethod("apply");
-        } catch (NoSuchMethodException unused) {
-            // fall through
-        }
-        return null;
-    }
-
-    public static void apply(SharedPreferences.Editor editor) {
-        if (sApplyMethod != null) {
-            try {
-                sApplyMethod.invoke(editor);
-                return;
-            } catch (InvocationTargetException unused) {
-                // fall through
-            } catch (IllegalAccessException unused) {
-                // fall through
-            }
-        }
-        editor.commit();
-    }
-}