Remove unnecessary references to libunwind.

Bug: 79209464

Test: Builds.
Change-Id: Ica58edd0d11b54c45b0af8e75eed67936f4309c2
Merged-In: Ica58edd0d11b54c45b0af8e75eed67936f4309c2
(cherry picked from commit 2197eebc6421cc98ee024b195915a97c037f7670)
1 file changed