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
1 file changed