Android p preview 4
Remove unnecessary references to libunwind.

Bug: 79209464

Test: Builds and all tests pass on taimen (runtests.sh).
Change-Id: I9f8e556a0cb796be71acd8f8d8ec2aecbfc5544b
Merged-In: I9f8e556a0cb796be71acd8f8d8ec2aecbfc5544b
(cherry picked from commit 35a4f8c4cd76cc1c934ae2c1cd2ae7939d7581ec)
1 file changed