lxqt-globalkeys: build style cmake handles -isystem

srcpkgs/lxqt-globalkeys/template

@@ -13,10 +13,6 @@ homepage="http://lxqt.org/"
 distfiles="https://github.com/lxde/lxqt-globalkeys/releases/download/${version}/lxqt-globalkeys-${version}.tar.xz"
 checksum=18bdff9c909c6d7a7ef97fdbd8fc878d20633fdc29136d0799db33d88b7425f3
 
-post_configure() {
-	find -name flags.make -exec sed -i "{}" -e"s;-isystem;-I;g" \;
-}
-
 lxqt-globalkeys-devel_package() {
 	short_desc+=" - development files"
 	depends="${sourcepkg}>=${version}_${revision}"