nir: Remove lower_vec_to_movs

Unused.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24450>

src/compiler/nir/nir.h

@@ -2262,7 +2262,7 @@ typedef enum {
    /**
     * Backend-specific vec4 tex src argument.
     *
-    * Can be used to have NIR optimization (copy propagation, lower_vec_to_movs)
+    * Can be used to have NIR optimization (copy propagation, lower_vec_to_regs)
     * apply to the packing of the tex srcs.  This lowering must only happen
     * after nir_lower_tex().
     *
@@ -5347,8 +5347,6 @@ bool nir_zero_initialize_shared_memory(nir_shader *shader,
                                        const unsigned chunk_size);
 
 bool nir_move_vec_src_uses_to_dest(nir_shader *shader);
-bool nir_lower_vec_to_movs(nir_shader *shader, nir_instr_writemask_filter_cb cb,
-                           const void *_data);
 bool nir_lower_vec_to_regs(nir_shader *shader, nir_instr_writemask_filter_cb cb,
                            const void *_data);
 void nir_lower_alpha_test(nir_shader *shader, enum compare_func func,