diff --git a/exwm-cm.el b/exwm-cm.el
deleted file mode 100644
index ed3c0fe..0000000
--- a/exwm-cm.el
+++ /dev/null
@@ -1,50 +0,0 @@
-;;; exwm-cm.el --- Compositing Manager for EXWM  -*- lexical-binding: t -*-
-
-;; Copyright (C) 2016-2024 Free Software Foundation, Inc.
-
-;; Author: Chris Feng <chris.w.feng@gmail.com>
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; This module is obsolete since EXWM now supports third-party compositors.
-
-;;; Code:
-
-(make-obsolete-variable 'exwm-cm-opacity
-                        "This variable should no longer be used." "26")
-
-(defun exwm-cm-set-opacity (&rest _args)
-  (declare (obsolete nil "26")))
-
-(defun exwm-cm-enable ()
-  (declare (obsolete nil "26")))
-
-(defun exwm-cm-start ()
-  (declare (obsolete nil "26")))
-
-(defun exwm-cm-stop ()
-  (declare (obsolete nil "26")))
-
-(defun exwm-cm-toggle ()
-  (declare (obsolete nil "26")))
-
-
-
-(provide 'exwm-cm)
-
-;;; exwm-cm.el ends here