intel/fs: Don't copy propagate from saturate to sel

intel/fs: Don't copy propagate from saturate to sel

There are already NIR algebraic optimizations (see also ac6646129f7
("nir: Move fsat outside of fmin/fmax if second arg is 0 to 1.") that
will try to remove the saturate from things like

    fmax(0.5, fsat(x))

This basically reverts 40aeb558ce8 ("i965/fs: Allow propagation of
instructions with saturate flag to sel"). That commit message had no
shader-db information, so it's unclear whether this actually helped
anything ever.

No shader-db changes on any Intel platform.

One shader in Far Cry New Dawn was affected.

Cycles in all programs: 10933090738 -> 10933090736 (-0.0%)
Cycles helped: 1

Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22169>