wmii like xmonad, no decorations

xmonad.hs

import XMonad
import XMonad.Hooks.EwmhDesktops
import XMonad.Hooks.DynamicLog
import XMonad.Hooks.ManageDocks
import XMonad.Hooks.ManageHelpers
import XMonad.Layout.Groups.Wmii
import XMonad.Util.Run
import XMonad.Util.EZConfig
import System.IO
import XMonad.Layout.NoBorders

main = do
    xmonad $ ewmh $ docks def
        { modMask     = mod4Mask
        , layoutHook  = layoutHook'
        , handleEventHook = fullscreenEventHook
        }
        `additionalKeysP`
        [ ("M-m", groupToFullLayout)
        , ("M-s", groupToTabbedLayout)
        , ("M-d", groupToVerticalLayout)
        , ("M-f", toggleGroupFull)
        , ("M-[", zoomGroupOut)
        , ("M-]", zoomGroupIn)
        , ("M-j", focusDown)
        , ("M-k", focusUp)
        , ("S-M-j", swapDown)
        , ("S-M-k", swapUp)
        , ("M-h", focusGroupUp)
        , ("M-l", focusGroupDown)
        , ("S-M-h", moveToGroupUp False)
        , ("S-M-l", moveToGroupDown False)
        , ("M-<Return>", spawn $ XMonad.terminal def)
        , ("M-<Print>", spawn "scrot")
        , ("M-r", spawn "rofi -show window")
        ]

full' = Full
wmii' = wmii shrinkText def
layoutHook' = smartBorders . avoidStruts $ wmii' ||| full'