Revert "Handle backup transport registration dynamically"

this patch breaks completly the binding to the in gapps
included backup services. Need to be revesited on a later point
why this happens.

This reverts commit c46c4a6765196bcabf3ea89771a1f9067b22baad.

Change-Id: I3fc4856fbbc05656dc5fdf6db30e3bc1bb4f7412
Merge "Revert "Handle backup transport registration dynamically"" into android-4.4