Adapt to platform update.

We now provide all of these in either libandroid_support or bionic
itself.

Test: ndk/checkbuild.py && ndk/run_tests.py
Bug: None
Change-Id: I0cde3d65cb3e289093d35442b0a41ce2b0725f2f
(cherry picked from commit 9b2962bdf656b35330322a549e74694a18def0d5)
1 file changed