refactor(wpcarro/emacs): Remove KBD logic from buffer.el

Part of an overall cleaning:
- remove tests from library files
- move KBDs from library files to top-level keybindings.el

Change-Id: I0fb80aa4a8d5cc77ee7ecca6206d5e4d62c93491
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4801
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>

users/wpcarro/emacs/.emacs.d/wpc/keybindings.el

@@ -367,5 +367,21 @@
  "M-j" nil
  "K" #'ibuffer-do-delete)
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; buffers
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(general-define-key
+ :states '(normal)
+ "C-f" #'buffer-cycle-next
+ "C-b" #'buffer-cycle-prev)
+
+(general-define-key
+ :prefix "<SPC>"
+ :states '(normal)
+ "b" #'buffer-ivy-source-code
+ "<SPC>" #'buffer-show-previous
+ "k" #'kill-buffer)
+
 (provide 'keybindings)
 ;;; keybindings.el ends here