Localize variable scope in vp9_rc_get_second_pass_params()
Localize variable scope in vp9_rc_get_second_pass_params()

Remove unnecessary definitions.

Change-Id: Ie540aaed5f3ed3768eff4e6563455666aef9c9e8

ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx