[nongnu] elpa/magit 107e9015e6 4/4: Revert "magit-diff-mode: Add diff-mode as an extra parent"

[Jonas Bernoulli via]

branch: elpa/magit
commit 107e9015e69585e1b0fd551b5b95df6619bdd61c
Author: Jonas Bernoulli <jo...@bernoul.li>
Commit: Jonas Bernoulli <jo...@bernoul.li>

    Revert "magit-diff-mode: Add diff-mode as an extra parent"
    
    This reverts commit 1fc960183a1fc0d007d355b1bcd5698f00f77e42.
---
 lisp/magit-diff.el | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/lisp/magit-diff.el b/lisp/magit-diff.el
index 97d333f528..baefff3738 100644
--- a/lisp/magit-diff.el
+++ b/lisp/magit-diff.el
@@ -2050,9 +2050,6 @@ Staging and applying changes is documented in info node
 (put 'magit-diff-mode 'magit-diff-default-arguments
      '("--stat" "--no-ext-diff"))
 
-(when (fboundp 'derived-mode-add-parents)
-  (derived-mode-add-parents 'magit-diff-mode '(diff-mode)))
-
 (defun magit-diff-setup-buffer ( range typearg args files
                                  &optional type locked)
   (require 'magit)