Removes overriding value of EXTERNAL_STORAGE for arm64.

Bug: 23327332
Change-Id: I29bd8fb0d6d631f360eff471bae9ba3f055a2b6c
diff --git a/init.ranchu.rc b/init.ranchu.rc
index 876272e..1e9f125 100644
--- a/init.ranchu.rc
+++ b/init.ranchu.rc
@@ -8,8 +8,6 @@
     # See storage config details at http://source.android.com/tech/storage/
     mkdir /storage/sdcard 0555 root root
 
-    export EXTERNAL_STORAGE /storage/sdcard
-
     # Support legacy paths
     #symlink /storage/sdcard /sdcard
     #symlink /storage/sdcard /mnt/sdcard