[Predictive Back] Remove animation on cancel for all apps to home

Framework has supported (ag/20876922) sending back progress on cancel. So no need to re-do the work on app side.

Bug: b/267664388
Test: manual, this CL has no visual change
Change-Id: I47c751d12a9b2c602ac6f3028665b996990fbd7e
1 file changed