Use new create/removeInputChannel().

This way we can restrict server channel in InputFlinger.

Also always use std::move() to move ownership when creating Java object
for InputChannel.

Bug: 167947395
Test: Touch events are still dispatched.
Test: WmTests:DisplayPolicyTests#testUpdateHideNavInputEventReceiver
Change-Id: I7033caf1015ec4bae65beab2c65bdeb4070f4775