Remove redundant function and calls
Remove redundant function and calls

lf deltas are later setup in function vp9_setup_past_independence(),
so this commit removed the redundant copy. Also renamed a function
to better align the behavior of the funciton.

Change-Id: I5d28c2f5b12b3d31817e14296ed4605c1fd5c98c

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