This reverts commit 3cb341bf71.
We should be able to dynamically switch between editing styles so evil-mu4e must
be able to revert its changes. For instance you start Emacs in Vim style and
have evil-mu4e activated then when you switch to Emacs style evil-mu4e should
revert its changes. See evil-magit for inspiration on how to do it.
Evilified maps supports hot switching of editing style out of the box.
f55b62543b