xrandr.lua: Stop setting font explicitly

This would just more-or-less use the font that naughty already uses by
itself. Put differently: This has (in most cases) no effect.

Signed-off-by: Uli Schlachter <psychon@znc.in>

recipes/xrandr.lua

@@ -2,7 +2,6 @@
 
 local awful     = require("awful")
 local naughty   = require("naughty")
-local beautiful = require("beautiful");
 
 -- A path to a fancy icon
 local icon_path = ""
@@ -121,7 +120,6 @@ local function xrandr()
                                 icon = icon,
                                 timeout = 4,
                                 screen = mouse.screen,
-                                font = beautiful.font,
                                 replaces_id = state.cid }).id
 
    -- Setup the timer