Cleaning up vp9_pick_inter_mode().
Cleaning up vp9_pick_inter_mode().

Change-Id: I21bff31e58e9078b4ffcbd2027cc52366843ff23

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