Revert "modem: workaround ofono crash"

We already updated our ofono branch to current master (after 1.28),
and this fix is not longer required, as stated in ticket OS#3064.

Related: OS#3064
This reverts commit f8d12196f05b20aa28b3103db26ea37ba6849362.

Change-Id: I884f6d4f3df4f3b4e2ac05e4dba2ad8704697521
1 file changed