i965/fs: Delete dead code to fail compiles with SIMD16 pull parameters.

i965/fs: Delete dead code to fail compiles with SIMD16 pull parameters.

The SIMD8 compile will determine whether pull parameters are necessary.
If so, it will set prog_data->nr_pull_params to a value greater than 0.

brw_wm_fs_emit checks if nr_pull_params > 0 and skips the SIMD16 compile
altogether.  So, this code should never occur.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>