Revert "qt4: fixup build with gcc8 by Arch aur patch"
Revert "qt4: fixup build with gcc8 by Arch aur patch"

The build was fixed in two ways, by both this patch and a substitution.
Let's keep the substitition instead of the patch as the patches may disappear.

This reverts commit ccc8c73ea00321318e9ac2cb75879f57bef328a7.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs