treewide: use nir_def_replace sometimes

Two Coccinelle patches here. Didn't catch nearly as much as I would've liked but
it's a start.

Coccinelle patch:

    @@
    expression intr, repl;
    @@

    -nir_def_rewrite_uses(&intr->def, repl);
    -nir_instr_remove(&intr->instr);
    +nir_def_replace(&intr->def, repl);

Coccinelle patch:

    @@
    identifier intr;
    expression instr, repl;
    @@

    nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
    ...
    -nir_def_rewrite_uses(&intr->def, repl);
    -nir_instr_remove(instr);
    +nir_def_replace(&intr->def, repl);

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com> [broadcom]
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> [lima]
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com> [etna]
Reviewed-by: Pavel Ondračka <pavel.ondracka@gmail.com> [r300]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29817>

src/compiler/nir/nir_lower_array_deref_of_vec.c

@@ -113,9 +113,7 @@ nir_lower_array_deref_of_vec_impl(nir_function_impl *impl,
             nir_def *scalar =
                nir_vector_extract(&b, &intrin->def, index);
             if (scalar->parent_instr->type == nir_instr_type_undef) {
-               nir_def_rewrite_uses(&intrin->def,
-                                    scalar);
-               nir_instr_remove(&intrin->instr);
+               nir_def_replace(&intrin->def, scalar);
             } else {
                nir_def_rewrite_uses_after(&intrin->def,
                                           scalar,