diff --git a/fb303/BUILD_MODE.bzl b/fb303/BUILD_MODE.bzl
deleted file mode 100644
index d13a9c1b6..000000000
--- a/fb303/BUILD_MODE.bzl
+++ /dev/null
@@ -1,27 +0,0 @@
-""" build mode definitions for fb303 """
-
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-load("@fbcode//:BUILD_MODE.bzl", get_parent_modes = "get_empty_modes")
-load("@fbcode_macros//build_defs:create_build_mode.bzl", "extend_build_modes")
-
-_modes = extend_build_modes(
-    get_parent_modes(),
-    cxx_modular_headers = True,
-)
-
-def get_modes():
-    """ Return modes for this file """
-    return _modes