Fix prepare step (means fully remove)

.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = plainpanel
         pkgdesc = plainDE panel
         pkgver = 0.1.3
-        pkgrel = 1
+        pkgrel = 2
         url = https://plainde.org
         arch = x86_64
         arch = i686

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=plainpanel
 pkgver=0.1.3
-pkgrel=1
+pkgrel=2
 pkgdesc="plainDE panel"
 arch=(x86_64 i686 arm armv6h armv7h aarch64)
 url="https://plainde.org"
@@ -13,10 +13,6 @@ source=("git+https://github.com/plainDE/plainPanel.git#tag=${pkgver}")
 sha256sums=('SKIP')
 optdepends=("plaincontrolcenter: Edit config from AUR")
 
-prepare () {
-  mkdir -p $pkgdir/usr/bin $pkgdir/usr/share/plainDE/{tools,styles} 
-}
-
 build() {
   cd $srcdir/plainPanel
   qmake
@@ -24,6 +20,7 @@ build() {
 }
 
 package() {
+  mkdir -p $pkgdir/usr/bin $pkgdir/usr/share/plainDE/{tools,styles} 
   cp $srcdir/plainPanel/plainPanel $pkgdir/usr/bin/
   cp $srcdir/plainPanel/tools/genconfig.py $pkgdir/usr/share/plainDE/tools/
   cp $srcdir/plainPanel/readme-icon.png $pkgdir/usr/share/plainDE/menuIcon.png