vc1dec: remove unused variables

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Revert "Merge commit '0517c9e098092709397cc522c59fa63c83cc81be'" bring the old audio resampling API back

This reverts commit d3edc65dd1e5b5d4246fcb8bcd216eb558bab7d4, reversing
changes made to 150de78d7c9cee65b4095832b25ae353e0d7c7af.

Conflicts:

	libavcodec/version.h

It seems there are several applications still using it

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>