refactor: remove duplicate code from decoration module

module/decorate.fnl

@@ -10,25 +10,9 @@
 (local gears (require :gears))
 (local wibox (require :wibox))
 
-(local std (require :lib.std))
-
-;; TODO Properly abstract these into a library
-
 (local fun (require :lib.fun))
-(local modifiers
-       {:mod "Mod4"
-        :alt "Mod1"
-        :super "Mod4"
-        :shift "Shift"
-        :ctrl "Control"})
-
-(fn map-mods [mods]
-  (->> mods
-     (fun.map (partial . modifiers))
-     (fun.totable)))
-
-(fn button [mods bc fun]
-  (awful.button (map-mods mods) bc fun))
+(local std (require :lib.std))
+(local button (. (require :lib.keys) :button))
 
 ;;;
 ;; Functions