Revert "Use lower shadow normal bias for distant directional shadow splits"

This reverts commit dfc05caf06fb9a2b6167be7f822aa86f4283ae7e.

servers/rendering/renderer_rd/storage_rd/light_storage.cpp

@@ -714,9 +714,7 @@ void LightStorage::update_light_buffers(RenderDataRD *p_render_data, const Paged
 						light_data.shadow_split_offsets[j] = split;
 						float bias_scale = light_instance->shadow_transform[j].bias_scale * light_data.soft_shadow_scale;
 						light_data.shadow_bias[j] = light->param[RS::LIGHT_PARAM_SHADOW_BIAS] / 100.0 * bias_scale;
-						// Use lower shadow normal bias for distant splits, relative to the share taken by the split.
-						// This helps reduce peter-panning at a distance.
-						light_data.shadow_normal_bias[j] = light->param[RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS] * light_instance->shadow_transform[j].shadow_texel_size * light_data.shadow_split_offsets[0] / split;
+						light_data.shadow_normal_bias[j] = light->param[RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS] * light_instance->shadow_transform[j].shadow_texel_size;
 						light_data.shadow_transmittance_bias[j] = light->param[RS::LIGHT_PARAM_TRANSMITTANCE_BIAS] / 100.0 * bias_scale;
 						light_data.shadow_z_range[j] = light_instance->shadow_transform[j].farplane;
 						light_data.shadow_range_begin[j] = light_instance->shadow_transform[j].range_begin;