Revert "Integrate connectionServiceFocusManager into call flow"

This reverts commit d2a1ecd367b7d2435b6b1458ba8d3779fe52576b.

This CL caused Duo unusable, need investigate the reason, so just reverted the CL at this time.

Change-Id: I710259befefdb8ec55767afce5a988d3a6cb0d5d
(cherry picked from commit 0e913fde338e0a073ea17c80e55b090d0e47e08b)
9 files changed