Remove MediaStore.Audio.AudioColumns.ALBUM_ART

This column doesn't actually exist in the corresponding table, and
never has, so the presence of this definition is confusing.

Change-Id: I199f9a8effbdc9f45d51060830e3ad83675a0dff
diff --git a/api/13.txt b/api/13.txt
index a17b80c..ebb4308 100644
--- a/api/13.txt
+++ b/api/13.txt
@@ -15558,7 +15558,6 @@
 
   public static abstract interface MediaStore.Audio.AudioColumns implements android.provider.MediaStore.MediaColumns {
     field public static final java.lang.String ALBUM = "album";
-    field public static final java.lang.String ALBUM_ART = "album_art";
     field public static final java.lang.String ALBUM_ID = "album_id";
     field public static final java.lang.String ALBUM_KEY = "album_key";
     field public static final java.lang.String ARTIST = "artist";
diff --git a/api/current.txt b/api/current.txt
index 950c130..1b71805 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -15630,7 +15630,6 @@
 
   public static abstract interface MediaStore.Audio.AudioColumns implements android.provider.MediaStore.MediaColumns {
     field public static final java.lang.String ALBUM = "album";
-    field public static final java.lang.String ALBUM_ART = "album_art";
     field public static final java.lang.String ALBUM_ID = "album_id";
     field public static final java.lang.String ALBUM_KEY = "album_key";
     field public static final java.lang.String ARTIST = "artist";
diff --git a/core/java/android/provider/MediaStore.java b/core/java/android/provider/MediaStore.java
index 02fd6e4..3bc1348 100644
--- a/core/java/android/provider/MediaStore.java
+++ b/core/java/android/provider/MediaStore.java
@@ -1096,12 +1096,6 @@
             public static final String ALBUM_KEY = "album_key";
 
             /**
-             * A URI to the album art, if any
-             * <P>Type: TEXT</P>
-             */
-            public static final String ALBUM_ART = "album_art";
-
-            /**
              * The track number of this song on the album, if any.
              * This number encodes both the track number and the
              * disc number. For multi-disc sets, this number will