diff --git a/src/amd/vulkan/bvh/build_helpers.h b/src/amd/vulkan/bvh/build_helpers.h
index 7d93be38759..9bb5116d6de 100644
--- a/src/amd/vulkan/bvh/build_helpers.h
+++ b/src/amd/vulkan/bvh/build_helpers.h
@@ -148,23 +148,6 @@ build_aabb(inout vk_aabb bounds, VOID_REF src_ptr, VOID_REF dst_ptr, uint32_t ge
    return is_valid;
 }
 
-vk_aabb
-calculate_instance_node_bounds(radv_accel_struct_header header, mat3x4 otw_matrix)
-{
-   vk_aabb aabb;
-   for (uint32_t comp = 0; comp < 3; ++comp) {
-      aabb.min[comp] = otw_matrix[comp][3];
-      aabb.max[comp] = otw_matrix[comp][3];
-      for (uint32_t col = 0; col < 3; ++col) {
-         aabb.min[comp] +=
-            min(otw_matrix[comp][col] * header.aabb.min[col], otw_matrix[comp][col] * header.aabb.max[col]);
-         aabb.max[comp] +=
-            max(otw_matrix[comp][col] * header.aabb.min[col], otw_matrix[comp][col] * header.aabb.max[col]);
-      }
-   }
-   return aabb;
-}
-
 uint32_t
 encode_sbt_offset_and_flags(uint32_t src)
 {
@@ -181,39 +164,6 @@ encode_sbt_offset_and_flags(uint32_t src)
    return ret;
 }
 
-bool
-build_instance(inout vk_aabb bounds, VOID_REF src_ptr, VOID_REF dst_ptr, uint32_t global_id)
-{
-   REF(radv_bvh_instance_node) node = REF(radv_bvh_instance_node)(dst_ptr);
-
-   AccelerationStructureInstance instance = DEREF(REF(AccelerationStructureInstance)(src_ptr));
-
-   /* An inactive instance is one whose acceleration structure handle is VK_NULL_HANDLE. Since the active terminology is
-    * only relevant for BVH updates, which we do not implement, we can also skip instances with mask == 0.
-    */
-   if (instance.accelerationStructureReference == 0 || instance.custom_instance_and_mask < (1u << 24u))
-      return false;
-
-   radv_accel_struct_header instance_header =
-      DEREF(REF(radv_accel_struct_header)(instance.accelerationStructureReference));
-
-   DEREF(node).bvh_ptr = addr_to_node(instance.accelerationStructureReference + instance_header.bvh_offset);
-   DEREF(node).bvh_offset = instance_header.bvh_offset;
-
-   mat4 transform = mat4(instance.transform);
-   mat4 inv_transform = transpose(inverse(transpose(transform)));
-   DEREF(node).wto_matrix = mat3x4(inv_transform);
-   DEREF(node).otw_matrix = mat3x4(transform);
-
-   bounds = calculate_instance_node_bounds(instance_header, mat3x4(transform));
-
-   DEREF(node).custom_instance_and_mask = instance.custom_instance_and_mask;
-   DEREF(node).sbt_offset_and_flags = encode_sbt_offset_and_flags(instance.sbt_offset_and_flags);
-   DEREF(node).instance_id = global_id;
-
-   return true;
-}
-
 /** Compute ceiling of integer quotient of A divided by B.
     From macros.h */
 #define DIV_ROUND_UP(A, B) (((A) + (B)-1) / (B))