vp9...parms_get_to_decoder: remove unneeded func
vp9...parms_get_to_decoder: remove unneeded func

removes a redundant cast in the process

Change-Id: Ie3727a0938c0093f70f25a875c2c58671938d45c

mwgoldsmith/libvpx,mbebenita/aom,felipebetancur/libvpx,luctrudeau/aom,smarter/aom,VTCSecureLLC/libvpx,thdav/aom,felipebetancur/libvpx,smarter/aom,mbebenita/aom,ShiftMediaProject/libvpx,shacklettbp/aom,felipebetancur/libvpx,ittiamvpx/libvpx-1,Topopiccione/libvpx,openpeer/libvpx_new,mwgoldsmith/vpx,GrokImageCompression/aom,shacklettbp/aom,luctrudeau/aom,Topopiccione/libvpx,mwgoldsmith/libvpx,ittiamvpx/libvpx-1,Topopiccione/libvpx,thdav/aom,shacklettbp/aom,felipebetancur/libvpx,ittiamvpx/libvpx-1,ShiftMediaProject/libvpx,GrokImageCompression/aom,VTCSecureLLC/libvpx,webmproject/libvpx,webmproject/libvpx,thdav/aom,jmvalin/aom,luctrudeau/aom,shacklettbp/aom,mwgoldsmith/vpx,GrokImageCompression/aom,luctrudeau/aom,openpeer/libvpx_new,mwgoldsmith/libvpx,mbebenita/aom,mbebenita/aom,jmvalin/aom,ShiftMediaProject/libvpx,mbebenita/aom,webmproject/libvpx,ShiftMediaProject/libvpx,GrokImageCompression/aom,thdav/aom,thdav/aom,mwgoldsmith/libvpx,GrokImageCompression/aom,jmvalin/aom,jmvalin/aom,thdav/aom,ittiamvpx/libvpx-1,openpeer/libvpx_new,VTCSecureLLC/libvpx,mbebenita/aom,mwgoldsmith/vpx,mbebenita/aom,GrokImageCompression/aom,ittiamvpx/libvpx-1,mwgoldsmith/libvpx,mwgoldsmith/vpx,Topopiccione/libvpx,shacklettbp/aom,jmvalin/aom,Topopiccione/libvpx,ittiamvpx/libvpx-1,smarter/aom,webmproject/libvpx,Topopiccione/libvpx,felipebetancur/libvpx,mbebenita/aom,VTCSecureLLC/libvpx,luctrudeau/aom,webmproject/libvpx,mbebenita/aom,felipebetancur/libvpx,smarter/aom,webmproject/libvpx,mwgoldsmith/vpx,smarter/aom,VTCSecureLLC/libvpx,smarter/aom,ShiftMediaProject/libvpx,openpeer/libvpx_new,shacklettbp/aom,VTCSecureLLC/libvpx,openpeer/libvpx_new,mwgoldsmith/libvpx,jmvalin/aom,mwgoldsmith/vpx,luctrudeau/aom,openpeer/libvpx_new