Do not set parent keymap of magit-todos-section-map

This is not necessary to make the regular magit-status keys work in
the TODOs section.

In fact, it causes a bug when used with evil-collection, which uses x
instead of k for delete (so that k can move the cursor up one line).
Setting the parent keymap unnecessarily confuses evil-collection and
causes k to attempt to delete the "thing" at point instead of
scrolling up.

magit-todos.el

@@ -119,7 +119,6 @@ Used to avoid running multiple simultaneous scans for a
 
 (defvar magit-todos-section-map
   (let ((map (make-sparse-keymap)))
-    (set-keymap-parent map magit-status-mode-map)
     (define-key map "b" #'magit-todos-branch-list-toggle)
     (define-key map "B" #'magit-todos-branch-list-set-commit)
     (define-key map [remap magit-visit-thing] #'magit-todos-list)