Comment out code to send SMS over BT.

This is to remove the usage of hidden constant MAP_CLIENT. This code
is not functional so it is ok to comment it out for now.

Test: basic sanity
Bug: 137202333
Merged-in: I3583f5a76ed13627f624fb20ecd3aab8cfceb615
Change-Id: I3583f5a76ed13627f624fb20ecd3aab8cfceb615
(cherry picked from commit f51faaeb)