Revert "sepolicy: fix zygote JIT permissions w.r.t. ashmem"

This reverts commit 7120b72a9b3b6e2de35bb94811066a0e9bcfbd9e.

Reason for revert: http://b/142742451

Change-Id: Ib857e0a56a83c0466b92f944421e3bd11c9279b4
diff --git a/private/zygote.te b/private/zygote.te
index d5e5420..66e14b3 100644
--- a/private/zygote.te
+++ b/private/zygote.te
@@ -53,7 +53,7 @@
 # Allow zygote to create JIT memory.
 allow zygote self:process execmem;
 allow zygote zygote_tmpfs:file execute;
-allow zygote ashmem_libcutils_device:chr_file execute;
+allow zygote ashmem_device:chr_file execute;
 
 # Execute idmap and dex2oat within zygote's own domain.
 # TODO:  Should either of these be transitioned to the same domain