Delete unnecessary /data/data entries.

/data/data subdirectories are labeled by installd at creation time
based on seapp_contexts, not based on file_contexts, so we do not
need the /data/data/.* entry, and the wallpaper file was moved from
under com.android.settings/files to /data/system/users/N long ago so we can
delete the old entry for it.

Change-Id: I32af6813ff284e8fe9fd4867df482a642c728755
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

file_contexts

@@ -194,10 +194,6 @@
 /data/misc/wifi/sockets/wpa_ctrl.*   u:object_r:system_wpa_socket:s0
 /data/misc/zoneinfo(/.*)?       u:object_r:zoneinfo_data_file:s0
 
-# App sandboxes
-/data/data/.*		u:object_r:app_data_file:s0
-# Wallpaper file.
-/data/data/com.android.settings/files/wallpaper	u:object_r:wallpaper_file:s0
 # Wallpaper file for other users
 /data/system/users/[0-9]+/wallpaper		u:object_r:wallpaper_file:s0
 # Downloaded files