Removing some old code which looked like it had to do with NACK handling but in reality did nothing.

BUG=webrtc:5762, webrtc:4690
R=stefan@webrtc.org
TBR=mflodman

Review URL: https://codereview.webrtc.org/1946183002 .

Cr-Commit-Position: refs/heads/master@{#12682}

webrtc/modules/video_coding/test/rtp_player.cc

@@ -228,7 +228,6 @@ class SsrcHandlers {
       return -1;
     }
 
-    handler->rtp_module_->SetNACKStatus(kNackOff);
     handler->rtp_header_parser_->RegisterRtpHeaderExtension(
         kRtpExtensionTransmissionTimeOffset,
         kDefaultTransmissionTimeOffsetExtensionId);