aco: remove early_rast wait insert

It's done in nir position export.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>

src/amd/compiler/aco_instruction_selection_setup.cpp

@@ -258,14 +258,6 @@ setup_vs_output_info(isel_context* ctx, nir_shader* nir)
    ctx->num_cull_distances = util_bitcount(outinfo->cull_dist_mask);
 
    assert(ctx->num_clip_distances + ctx->num_cull_distances <= 8);
-
-   /* GFX10+ early rasterization:
-    * When there are no param exports in an NGG (or legacy VS) shader,
-    * RADV sets NO_PC_EXPORT=1, which means the HW will start clipping and rasterization
-    * as soon as it encounters a DONE pos export. When this happens, PS waves can launch
-    * before the NGG (or VS) waves finish.
-    */
-   ctx->program->early_rast = ctx->program->gfx_level >= GFX10 && outinfo->param_exports == 0;
 }
 
 void