lib: Undo workaround that forced copy of jpeg buffers from the camera
lib: Undo workaround that forced copy of jpeg buffers from the camera

I can't reproduce the v4l2 allocation error that I was seeing earlier for which
this was added, so reverting it for now.

This reverts 6446b3a0b6676d8a46f50502b6fda3cb25b2e3e5

jhgorse/onevideo,jhgorse/onevideo