Delete /mnt/sdcard symlink

Bug: 28108983
Change-Id: Ib90a0afc66123587c1ebfd31f282e56e21ab21be
diff --git a/init.hikey.rc b/init.hikey.rc
index b2e86c4..a6a9f25 100644
--- a/init.hikey.rc
+++ b/init.hikey.rc
@@ -26,7 +26,6 @@
     # For legacy support
     # See storage config details at http://source.android.com/tech/storage/
     # since /storage is mounted on post-fs in init.rc
-    symlink /sdcard /mnt/sdcard
     symlink /sdcard /storage/sdcard0
 
     # insert WiFi Modules