emacs: remove useless binding
emacs: remove useless binding

helm-buffers-list is virtually identical to helm-mini. According to docs [1]:

	Note that the demo use helm-buffers-list, which is almost the same as
	helm-mini. The only difference is that helm-buffers-list uses
	ido-virtual-buffers for listing recently used files, while helm-mini uses
	recentf.

[1]: https://tuhdo.github.io/helm-intro.html#orgheadline7

listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg