Clean up old policy used for patchoat

Patchoat used to generate symlinks in /data/dalvik-cache that is later
referred by dex2oat. Since patchoat has been removed in Q, it should be
safe to remove the policy for reading symlinks.

Test: reboot; dmesg  # no new denial
Test: cmd package compile -m speed -f com.test.app  # no denial
Change-Id: Iad8c48c8bf0d31dcd19d6b321c8c15d3548a9190
diff --git a/private/dex2oat.te b/private/dex2oat.te
index 7907f6c..c257f1a 100644
--- a/private/dex2oat.te
+++ b/private/dex2oat.te
@@ -13,9 +13,6 @@
 
 r_dir_file(dex2oat, dalvikcache_data_file)
 allow dex2oat dalvikcache_data_file:file write;
-# Read symlinks in /data/dalvik-cache. This is required for PIC mode boot images, where
-# the oat file is symlinked to the original file in /system.
-allow dex2oat dalvikcache_data_file:lnk_file read;
 allow dex2oat installd:fd use;
 
 # Acquire advisory lock on /system/framework/arm/*