Revert "Handle separate fixed one-frame delay at startup properly"

This reverts commit f20ba254c659bf50f00d96b99af74227406b3ba8.

Input and output frames are no longer associated properly after a flush
with this commit

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Make GStreamer 1.2 and libfslvpuwrap 1.0.45 minimum requirements

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Drop frames if necessary

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Reintroduce reworked fixed-one-frame-delay changes

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>