Removed two unused global variables.
Removed two unused global variables.

Removed the global variables vp8_an and vp8_cd. vp8_an was causing problems
because it was increasing the .bss by 1572864 bytes.

Change-Id: I6c12e294133c7fb6e770c0e4536d8287a5720a87

ShiftMediaProject/libvpx,iniwf/webm.libvpx,sanyaade-teachings/libvpx,enmasse-entertainment/libvpx,Suvarna1488/webm.libvpx,pcwalton/libvpx,Distrotech/libvpx,smarter/aom,zofuthan/libvpx,Acidburn0zzz/webm.libvpx,matanbs/vp982,iniwf/webm.libvpx,stewnorriss/libvpx,webmproject/libvpx,jmvalin/aom,ittiamvpx/libvpx,kim42083/webm.libvpx,jacklicn/webm.libvpx,sanyaade-teachings/libvpx,stewnorriss/libvpx,awatry/libvpx.opencl,pcwalton/libvpx,ittiamvpx/libvpx-1,Suvarna1488/webm.libvpx,running770/libvpx,Topopiccione/libvpx,shacklettbp/aom,luctrudeau/aom,mrchapp/libvpx,shacklettbp/aom,vasilvv/esvp8,enmasse-entertainment/libvpx,thdav/aom,kleopatra999/webm.libvpx,Acidburn0zzz/webm.libvpx,matanbs/vp982,kim42083/webm.libvpx,matanbs/vp982,GrokImageCompression/aom,reimaginemedia/webm.libvpx,altogother/webm.libvpx,goodleixiao/vpx,lyx2014/libvpx_c,vasilvv/esvp8,genesi/libvpx0,iniwf/webm.libvpx,turbulenz/libvpx,sanyaade-teachings/libvpx,smarter/aom,ittiamvpx/libvpx,jacklicn/webm.libvpx,gshORTON/webm.libvpx,smarter/aom,luctrudeau/aom,reimaginemedia/webm.libvpx,gshORTON/webm.libvpx,stewnorriss/libvpx,Suvarna1488/webm.libvpx,vasilvv/esvp8,VTCSecureLLC/libvpx,gshORTON/webm.libvpx,rikaunite/gst-opera_libvpx,Topopiccione/libvpx,VTCSecureLLC/libvpx,mbebenita/aom,ittiamvpx/libvpx,thdav/aom,iniwf/webm.libvpx,charup/https---github.com-webmproject-libvpx-,Suvarna1488/webm.libvpx,altogother/webm.libvpx,webmproject/libvpx,Topopiccione/libvpx,turbulenz/libvpx,mrchapp/libvpx,vasilvv/esvp8,mbebenita/aom,iniwf/webm.libvpx,liqianggao/libvpx,cinema6/libvpx,Maria1099/webm.libvpx,lyx2014/libvpx_c,kalli123/webm.libvpx,Distrotech/libvpx,Maria1099/webm.libvpx,webmproject/libvpx,mwgoldsmith/vpx,n4t/libvpx,thdav/aom,jdm/libvpx,WebRTC-Labs/libvpx,zofuthan/libvpx,openpeer/libvpx_new,kalli123/webm.libvpx,shacklettbp/aom,rikaunite/gst-opera_libvpx,mrchapp/libvpx,kim42083/webm.libvpx,mwgoldsmith/libvpx,charup/https---github.com-webmproject-libvpx-,kleopatra999/webm.libvpx,vasilvv/esvp8,jmvalin/aom,shareefalis/libvpx,zofuthan/libvpx,pcwalton/libvpx,reimaginemedia/webm.libvpx,matanbs/vp982,felipebetancur/libvpx,Maria1099/webm.libvpx,running770/libvpx,mwgoldsmith/libvpx,WebRTC-Labs/libvpx,running770/libvpx,jacklicn/webm.libvpx,charup/https---github.com-webmproject-libvpx-,mwgoldsmith/vpx,ittiamvpx/libvpx-1,webmproject/libvpx,kalli123/webm.libvpx,GrokImageCompression/aom,zofuthan/libvpx,kim42083/webm.libvpx,ittiamvpx/libvpx-1,GrokImageCompression/aom,VTCSecureLLC/libvpx,matanbs/vp982,jmvalin/aom,openpeer/libvpx_new,pcwalton/libvpx,kim42083/webm.libvpx,stewnorriss/libvpx,abwiz0086/webm.libvpx,abwiz0086/webm.libvpx,rikaunite/gst-opera_libvpx,hsueceumd/test_hui,Laknot/libvpx,mbebenita/aom,sanyaade-teachings/libvpx,matanbs/webm.libvpx,VTCSecureLLC/libvpx,cinema6/libvpx,ShiftMediaProject/libvpx,ittiamvpx/libvpx-1,openpeer/libvpx_new,Laknot/libvpx,rikaunite/gst-opera_libvpx,kleopatra999/webm.libvpx,abwiz0086/webm.libvpx,smarter/aom,felipebetancur/libvpx,shareefalis/libvpx,lyx2014/libvpx_c,Maria1099/webm.libvpx,mrchapp/libvpx,Distrotech/libvpx,kim42083/webm.libvpx,ittiamvpx/libvpx,thdav/aom,gshORTON/webm.libvpx,shacklettbp/aom,vasilvv/esvp8,hsueceumd/test_hui,shyamalschandra/libvpx,liqianggao/libvpx,cinema6/libvpx,genesi/libvpx0,matanbs/webm.libvpx,shacklettbp/aom,Acidburn0zzz/webm.libvpx,webmproject/libvpx,Suvarna1488/webm.libvpx,turbulenz/libvpx,jmvalin/aom,lyx2014/libvpx_c,lyx2014/libvpx_c,running770/libvpx,thdav/aom,WebRTC-Labs/libvpx,matanbs/webm.libvpx,Suvarna1488/webm.libvpx,luctrudeau/aom,genesi/libvpx0,hsueceumd/test_hui,jdm/libvpx,mbebenita/aom,n4t/libvpx,altogother/webm.libvpx,running770/libvpx,charup/https---github.com-webmproject-libvpx-,genesi/libvpx0,hsueceumd/test_hui,enmasse-entertainment/libvpx,Laknot/libvpx,cinema6/libvpx,GrokImageCompression/aom,goodleixiao/vpx,GrokImageCompression/aom,mwgoldsmith/libvpx,shareefalis/libvpx,turbulenz/libvpx,stewnorriss/libvpx,genesi/libvpx0,openpeer/libvpx_new,shacklettbp/aom,GrokImageCompression/aom,mwgoldsmith/vpx,goodleixiao/vpx,stewnorriss/libvpx,mbebenita/aom,turbulenz/libvpx,abwiz0086/webm.libvpx,matanbs/vp982,gshORTON/webm.libvpx,jdm/libvpx,jmvalin/aom,mwgoldsmith/libvpx,iniwf/webm.libvpx,thdav/aom,sanyaade-teachings/libvpx,awatry/libvpx.opencl,goodleixiao/vpx,Distrotech/libvpx,kleopatra999/webm.libvpx,felipebetancur/libvpx,cinema6/libvpx,shareefalis/libvpx,shareefalis/libvpx,mbebenita/aom,mbebenita/aom,ittiamvpx/libvpx-1,Maria1099/webm.libvpx,openpeer/libvpx_new,turbulenz/libvpx,jdm/libvpx,turbulenz/libvpx,hsueceumd/test_hui,charup/https---github.com-webmproject-libvpx-,jacklicn/webm.libvpx,mwgoldsmith/vpx,reimaginemedia/webm.libvpx,felipebetancur/libvpx,mwgoldsmith/vpx,turbulenz/libvpx,shyamalschandra/libvpx,Laknot/libvpx,kleopatra999/webm.libvpx,webmproject/libvpx,mwgoldsmith/libvpx,goodleixiao/vpx,matanbs/webm.libvpx,VTCSecureLLC/libvpx,altogother/webm.libvpx,Laknot/libvpx,Acidburn0zzz/webm.libvpx,kalli123/webm.libvpx,cinema6/libvpx,luctrudeau/aom,kalli123/webm.libvpx,liqianggao/libvpx,WebRTC-Labs/libvpx,n4t/li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