Revert "Fix Whisperpush and Voice+ when using the new Hangouts."

This reverts commit 006ea28102ff635b9608342da179174fd806fab4.
Revert "IMS-VT: Peer capabilities"

This reverts commit 890f3037dd8239990d9dcae647394309367ce9ac.
Revert "MSIM: Update Default subId value"

This reverts commit 6ad660a87cbf6122f85c932ffdca2de9f73489cc.
Revert "Update DDS preference for single sim case at boot up."

This reverts commit 1c53e8578d6a18ad5b9be71126245b3d904c6427.
Revert "Add SMS Middleware layer."

This reverts commit 2d65d1ded4fdc42ca45664b99a888725ae9fffcd.