sepolicy: nuke uncompatible policies for O bringup

Change-Id: If38fb14d420e7d1c07b7b65f3ead9a60ef0c9edb
diff --git a/sepolicy/vold.te b/sepolicy/vold.te
index 1a1d1ad..a72bcdf 100644
--- a/sepolicy/vold.te
+++ b/sepolicy/vold.te
@@ -6,7 +6,7 @@
 
 # Allow vold to manage ASEC
 allow vold sdcard_type:file create_file_perms;
-allow vold vold_tmpfs:file create_file_perms;
+#allow vold vold_tmpfs:file create_file_perms;
 
 # Allow vold to access fuse for fuse-based fs
 allow vold fuse_device:chr_file rw_file_perms;