diff --git a/cfg/experimental/set_cfg_constructor.bzl b/cfg/experimental/set_cfg_constructor.bzl
deleted file mode 100644
index e32afe7c4426..000000000000
--- a/cfg/experimental/set_cfg_constructor.bzl
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-#
-# This source code is licensed under both the MIT license found in the
-# LICENSE-MIT file in the root directory of this source tree and the Apache
-# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
-# of this source tree.
-
-load(":alias.bzl?v2_only", "ALIASES")
-load(":cfg_constructor.bzl?v2_only", "cfg_constructor_post_constraint_analysis", "cfg_constructor_pre_constraint_analysis")
-load(":common.bzl?v2_only", "MODIFIER_METADATA_KEY")
-
-def set_cfg_constructor():
-    # This is to be buck1-proof.
-    set_cfg_constructor_func = getattr(native, "set_cfg_constructor", None)
-    if set_cfg_constructor_func:
-        set_cfg_constructor_func(
-            stage0 = cfg_constructor_pre_constraint_analysis,
-            stage1 = cfg_constructor_post_constraint_analysis,
-            key = MODIFIER_METADATA_KEY,
-            aliases = ALIASES,
-        )