Revert "SELinux changes for AppFuse"

This reverts commit 0c1848b170f1cce87351dfdda6ca404d86a45b56.

Test: presubmit
diff --git a/private/system_server.te b/private/system_server.te
index bd073ff..619a1f7 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -741,7 +741,8 @@
 # For AppFuse.
 allow system_server vold:fd use;
 allow system_server fuse_device:chr_file { read write ioctl getattr };
-allow system_server app_fuse_file:file { read write getattr };
+allow system_server app_fuse_file:dir rw_dir_perms;
+allow system_server app_fuse_file:file { read write open getattr append };
 
 # For configuring sdcardfs
 allow system_server configfs:dir { create_dir_perms };