Remove redundant ref frame pointer assignment
Remove redundant ref frame pointer assignment

Assigning selected reference frame pointer is done in the
encode_superblock function. No need to do this at the end of
rate-distortion optimization search.

Change-Id: I33fcede0fd304b4a4c4deef2d126d79546a9c070

Suvarna1488/webm.libvpx,shareefalis/libvpx,stewnorriss/libvpx,webmproject/libvpx,running770/libvpx,n4t/libvpx,abwiz0086/webm.libvpx,charup/https---github.com-webmproject-libvpx-,shyamalschandra/libvpx,stewnorriss/libvpx,Laknot/libvpx,jacklicn/webm.libvpx,shacklettbp/aom,GrokImageCompression/aom,liqianggao/libvpx,mbebenita/aom,mwgoldsmith/libvpx,gshORTON/webm.libvpx,jacklicn/webm.libvpx,jmvalin/aom,smarter/aom,kleopatra999/webm.libvpx,matanbs/webm.libvpx,thdav/aom,mbebenita/aom,altogother/webm.libvpx,pcwalton/libvpx,felipebetancur/libvpx,goodleixiao/vpx,n4t/libvpx,pcwalton/libvpx,openpeer/libvpx_new,openpeer/libvpx_new,Acidburn0zzz/webm.libvpx,Distrotech/libvpx,goodleixiao/vpx,iniwf/webm.libvpx,ittiamvpx/libvpx-1,matanbs/webm.libvpx,Acidburn0zzz/webm.libvpx,Laknot/libvpx,matanbs/vp982,kalli123/webm.libvpx,VTCSecureLLC/libvpx,gshORTON/webm.libvpx,hsueceumd/test_hui,charup/https---github.com-webmproject-libvpx-,felipebetancur/libvpx,matanbs/vp982,liqianggao/libvpx,ittiamvpx/libvpx,zofuthan/libvpx,reimaginemedia/webm.libvpx,shacklettbp/aom,matanbs/webm.libvpx,ittiamvpx/libvpx-1,lyx2014/libvpx_c,webmproject/libvpx,Acidburn0zzz/webm.libvpx,shyamalschandra/libvpx,kalli123/webm.libvpx,ittiamvpx/libvpx-1,hsueceumd/test_hui,jmvalin/aom,openpeer/libvpx_new,kalli123/webm.libvpx,stewnorriss/libvpx,pcwalton/libvpx,altogother/webm.libvpx,lyx2014/libvpx_c,matanbs/webm.libvpx,GrokImageCompression/aom,zofuthan/libvpx,shacklettbp/aom,zofuthan/libvpx,felipebetancur/libvpx,iniwf/webm.libvpx,jmvalin/aom,Suvarna1488/webm.libvpx,Distrotech/libvpx,goodleixiao/vpx,mbebenita/aom,stewnorriss/libvpx,stewnorriss/libvpx,felipebetancur/libvpx,shareefalis/libvpx,luctrudeau/aom,Laknot/libvpx,shyamalschandra/libvpx,jacklicn/webm.libvpx,mwgoldsmith/vpx,ittiamvpx/libvpx-1,felipebetancur/libvpx,kalli123/webm.libvpx,webmproject/libvpx,gshORTON/webm.libvpx,openpeer/libvpx_new,Distrotech/libvpx,abwiz0086/webm.libvpx,abwiz0086/webm.libvpx,zofuthan/libvpx,luctrudeau/aom,mwgoldsmith/vpx,gshORTON/webm.libvpx,reimaginemedia/webm.libvpx,liqianggao/libvpx,VTCSecureLLC/libvpx,ShiftMediaProject/libvpx,shareefalis/libvpx,pcwalton/libvpx,mwgoldsmith/vpx,zofuthan/libvpx,mwgoldsmith/libvpx,luctrudeau/aom,jdm/libvpx,charup/https---github.com-webmproject-libvpx-,running770/libvpx,thdav/aom,iniwf/webm.libvpx,reimaginemedia/webm.libvpx,lyx2014/libvpx_c,hsueceumd/test_hui,shacklettbp/aom,mwgoldsmith/vpx,mbebenita/aom,Maria1099/webm.libvpx,ShiftMediaProject/libvpx,Maria1099/webm.libvpx,hsueceumd/test_hui,Acidburn0zzz/webm.libvpx,altogother/webm.libvpx,matanbs/vp982,kalli123/webm.libvpx,GrokImageCompression/aom,abwiz0086/webm.libvpx,reimaginemedia/webm.libvpx,abwiz0086/webm.libvpx,ShiftMediaProject/libvpx,kim42083/webm.libvpx,kim42083/webm.libvpx,openpeer/libvpx_new,shyamalschandra/libvpx,VTCSecureLLC/libvpx,mbebenita/aom,reimaginemedia/webm.libvpx,n4t/libvpx,smarter/aom,ShiftMediaProject/libvpx,jdm/libvpx,reimaginemedia/webm.libvpx,abwiz0086/webm.libvpx,mwgoldsmith/vpx,smarter/aom,Acidburn0zzz/webm.libvpx,thdav/aom,Laknot/libvpx,altogother/webm.libvpx,luctrudeau/aom,openpeer/libvpx_new,liqianggao/libvpx,GrokImageCompression/aom,kim42083/webm.libvpx,Maria1099/webm.libvpx,Suvarna1488/webm.libvpx,felipebetancur/libvpx,charup/https---github.com-webmproject-libvpx-,mwgoldsmith/libvpx,jacklicn/webm.libvpx,pcwalton/libvpx,kalli123/webm.libvpx,matanbs/vp982,zofuthan/libvpx,iniwf/webm.libvpx,liqianggao/libvpx,shareefalis/libvpx,mbebenita/aom,Topopiccione/libvpx,kleopatra999/webm.libvpx,Maria1099/webm.libvpx,charup/https---github.com-webmproject-libvpx-,thdav/aom,goodleixiao/vpx,smarter/aom,altogother/webm.libvpx,mwgoldsmith/libvpx,shareefalis/libvpx,running770/libvpx,gshORTON/webm.libvpx,running770/libvpx,jmvalin/aom,goodleixiao/vpx,Distrotech/libvpx,kleopatra999/webm.libvpx,smarter/aom,GrokImageCompression/aom,hsueceumd/test_hui,webmproject/libvpx,matanbs/vp982,n4t/libvpx,kleopatra999/webm.libvpx,running770/libvpx,shyamalschandra/libvpx,Maria1099/webm.libvpx,ShiftMediaProject/libvpx,shareefalis/libvpx,Acidburn0zzz/webm.libvpx,matanbs/webm.libvpx,n4t/libvpx,liqianggao/libvpx,Topopiccione/libvpx,smarter/aom,webmproject/libvpx,thdav/aom,kim42083/webm.libvpx,thdav/aom,gshORTON/webm.libvpx,hsueceumd/test_hui,Suvarna1488/webm.libvpx,VTCSecureLLC/libvpx,jdm/libvpx,running770/libvpx,Distrotech/libvpx,GrokImageCompression/aom,goodleixiao/vpx,kleopatra999/webm.libvpx,mwgoldsmith/libvpx,ittiamvpx/libvpx,shyamalschandra/libvpx,luctrudeau/aom,ittiamvpx/libvpx,jacklicn/webm.libvpx,Suvarna1488/webm.libvpx,Laknot/libvpx,Laknot/libvpx,jmvalin/aom,ittiamvpx/libvpx-1,charup/https---github.com-webmproject-libvpx-,matanbs/vp982,Topopiccione/libvpx,webmproject/libvpx,jdm/libvpx,ittiamvpx/libvpx,mwgoldsmith/vpx,kleopatra999/webm.libvpx,altogother/webm.libvpx,jacklicn/webm.libvpx,matanbs/vp982,mbebenita/aom,iniwf/webm.libvpx,mwgoldsmith/libvpx,mbebenita/aom,ittiamvpx/libvpx,jmvalin/aom,lyx2014/libvpx_c,jdm/libvpx,shacklettbp/aom,Topopiccione/libvpx,VTCSecureLLC/libvpx,ittiamvpx/libvpx-1,shacklettb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