Symlinking doesn't make sense for host APEXes.
Bug: 150255435
Test: m com.android.art.host and inspect the built APEX; there is
no symlink.
Merged-In: I28492dfaaef471117a430be05255fbef76e557b0
(cherry picked from commit 9b96418dfe)
Change-Id: I28492dfaaef471117a430be05255fbef76e557b0