Retire pcmStart and pcmStop

not used

Bug: 242154834
Test: presubmit
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I14f1c486ae9a4a47c1b9b9ff705590f00adb27ae
(cherry picked from commit 8ed0bcb4ea3b4e84ba5ebd34512aad7710c8758c)
Merged-In: I14f1c486ae9a4a47c1b9b9ff705590f00adb27ae
2 files changed