Remove unused functions

Test: Compile
Bug: 63760809
Change-Id: I582c259ca0787a701d434eea9592c9e8d7351f08
Merged-In: I582c259ca0787a701d434eea9592c9e8d7351f08
(cherry picked from commit 3ba20e6b6bef8059e0c366107e85965f5a433bdf)
4 files changed