The calls to BKE_animsys_evaluate_all_animation() and
BKE_mask_evaluate_all_masks() used the wrong timecode to evaluate the
animation system. This happened:

• Sequencer in scene A was rendered at frame X.
• Scene strip for scene B which should be evaluated at frame Y.
• BKE_animsys_evaluate_all_animation() was called with frame Y, which also re-evaluated the animation data in scene A.
• Other sequencer strips with animated values were then evaluated for frame Y and not frame X.

Since the depsgraph for rendering the scene strip is already OK and does
its job, it's no longer necessary to re-evaluate all the animation in
this way. Evaluating the pipeline depsgraph is enough.

Removed BKE_mask_evaluate_all_masks() because it's no longer used.