Remove EncodedFrame::inter_layer_predicted.
Remove EncodedFrame::inter_layer_predicted.

Bug: webrtc:12206
Change-Id: I52246e81aa9a814fc211df19fbe27aff197a85b7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/196743
Commit-Queue: Philip Eliasson <729b5e2dca9359bca8c81d600ef9d3e554586ac9@webrtc.org>
Reviewed-by: Niels Moller <0057859e47d61d90529d0f66d9ef692cefedb46a@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#32815}

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