Removed superfluous check in FrameBuffer2.

Since inter_layer_predicted information is not propagated by the Dependency Descriptor this block non-VP9 super frames.

Bug: webrtc:10342
Change-Id: I90fbd368e92d168560a21ff79693f07071ea6cfb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/194140
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32643}

modules/video_coding/frame_buffer2.cc

@@ -153,12 +153,6 @@ int64_t FrameBuffer::FindNextFrame(int64_t now_ms) {
       continue;
     }
 
-    // Only ever return all parts of a superframe. Therefore skip this
-    // frame if it's not a beginning of a superframe.
-    if (frame->inter_layer_predicted) {
-      continue;
-    }
-
     // Gather all remaining frames for the same superframe.
     std::vector<FrameMap::iterator> current_superframe;
     current_superframe.push_back(frame_it);