Remove now-obsolete BACKUP_DATA permission

Change-Id: Ib1d37c5c4577f6eaededb297aa8b126896e0f4f6
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2d152ad..d705999 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -4,7 +4,6 @@
     <uses-permission android:name="android.permission.VIBRATE"/>
     <uses-permission android:name="android.permission.READ_USER_DICTIONARY" />
     <uses-permission android:name="android.permission.WRITE_USER_DICTIONARY" />
-    <uses-permission android:name="android.permission.BACKUP_DATA" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
 
     <application android:label="@string/english_ime_name"